Home / 20,736,015.40-31,104,023.10-18,878,069.80

Finding the Fourth Proportional to 20,736,015.40, 31,104,023.10 and 18,878,069.80

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Solution

The fourth proportional to 20,736,015.40, 31,104,023.10 and 18,878,069.80 is: 28,317,104.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,015.40 : 31,104,023.10 = 18,878,069.80 : x
  2. Step 2: Convert to fraction form
    20,736,015.40/31,104,023.10 = 18,878,069.80/x
  3. Step 3: Cross multiply
    20,736,015.40x = 31,104,023.10 × 18,878,069.80
  4. Step 4: Simplify right side
    20,736,015.40x = 587,183,919,142,612.38
  5. Step 5: Solve for x
    x = 587,183,919,142,612.38/20,736,015.40
  6. Step 6: Final answer
    x = 28,317,104.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.