Home / 18,711,200.70-28,066,801.05-12,971,637.90

Finding the Fourth Proportional to 18,711,200.70, 28,066,801.05 and 12,971,637.90

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Solution

The fourth proportional to 18,711,200.70, 28,066,801.05 and 12,971,637.90 is: 19,457,456.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711,200.70 : 28,066,801.05 = 12,971,637.90 : x
  2. Step 2: Convert to fraction form
    18,711,200.70/28,066,801.05 = 12,971,637.90/x
  3. Step 3: Cross multiply
    18,711,200.70x = 28,066,801.05 × 12,971,637.90
  4. Step 4: Simplify right side
    18,711,200.70x = 364,072,380,231,939.81
  5. Step 5: Solve for x
    x = 364,072,380,231,939.81/18,711,200.70
  6. Step 6: Final answer
    x = 19,457,456.85

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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.