Home / 18,711,208.30-28,066,812.45-13,672,360.30

Finding the Fourth Proportional to 18,711,208.30, 28,066,812.45 and 13,672,360.30

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Solution

The fourth proportional to 18,711,208.30, 28,066,812.45 and 13,672,360.30 is: 20,508,540.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711,208.30 : 28,066,812.45 = 13,672,360.30 : x
  2. Step 2: Convert to fraction form
    18,711,208.30/28,066,812.45 = 13,672,360.30/x
  3. Step 3: Cross multiply
    18,711,208.30x = 28,066,812.45 × 13,672,360.30
  4. Step 4: Simplify right side
    18,711,208.30x = 383,739,572,288,925.75
  5. Step 5: Solve for x
    x = 383,739,572,288,925.75/18,711,208.30
  6. Step 6: Final answer
    x = 20,508,540.45

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Double scale
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Similar ratio
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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.