Home / 20,569,812.80-28,389,233.48-12,731,839.08

Finding the Fourth Proportional to 20,569,812.80, 28,389,233.48 and 12,731,839.08

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Solution

The fourth proportional to 20,569,812.80, 28,389,233.48 and 12,731,839.08 is: 17,571,727.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569,812.80 : 28,389,233.48 = 12,731,839.08 : x
  2. Step 2: Convert to fraction form
    20,569,812.80/28,389,233.48 = 12,731,839.08/x
  3. Step 3: Cross multiply
    20,569,812.80x = 28,389,233.48 × 12,731,839.08
  4. Step 4: Simplify right side
    20,569,812.80x = 361,447,152,208,249.25
  5. Step 5: Solve for x
    x = 361,447,152,208,249.25/20,569,812.80
  6. Step 6: Final answer
    x = 17,571,727.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.