Home / 18,711,331.80-28,066,997.70-15,971,458.20

Finding the Fourth Proportional to 18,711,331.80, 28,066,997.70 and 15,971,458.20

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Solution

The fourth proportional to 18,711,331.80, 28,066,997.70 and 15,971,458.20 is: 23,957,187.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711,331.80 : 28,066,997.70 = 15,971,458.20 : x
  2. Step 2: Convert to fraction form
    18,711,331.80/28,066,997.70 = 15,971,458.20/x
  3. Step 3: Cross multiply
    18,711,331.80x = 28,066,997.70 × 15,971,458.20
  4. Step 4: Simplify right side
    18,711,331.80x = 448,270,880,565,046.12
  5. Step 5: Solve for x
    x = 448,270,880,565,046.12/18,711,331.80
  6. Step 6: Final answer
    x = 23,957,187.30

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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.