Home / 20,990,155,009.25-28,812,226,924.68-18,558,015,272.75

Finding the Fourth Proportional to 20,990,155,009.25, 28,812,226,924.68 and 18,558,015,272.75

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Solution

The fourth proportional to 20,990,155,009.25, 28,812,226,924.68 and 18,558,015,272.75 is: 25,473,739,811.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,990,155,009.25 : 28,812,226,924.68 = 18,558,015,272.75 : x
  2. Step 2: Convert to fraction form
    20,990,155,009.25/28,812,226,924.68 = 18,558,015,272.75/x
  3. Step 3: Cross multiply
    20,990,155,009.25x = 28,812,226,924.68 × 18,558,015,272.75
  4. Step 4: Simplify right side
    20,990,155,009.25x = 534,697,747,310,006,108,160
  5. Step 5: Solve for x
    x = 534,697,747,310,006,108,160/20,990,155,009.25
  6. Step 6: Final answer
    x = 25,473,739,811.57

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.