Home / 20,386,045.91-28,132,747.34-11,218,688.66

Finding the Fourth Proportional to 20,386,045.91, 28,132,747.34 and 11,218,688.66

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Solution

The fourth proportional to 20,386,045.91, 28,132,747.34 and 11,218,688.66 is: 15,481,792.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,045.91 : 28,132,747.34 = 11,218,688.66 : x
  2. Step 2: Convert to fraction form
    20,386,045.91/28,132,747.34 = 11,218,688.66/x
  3. Step 3: Cross multiply
    20,386,045.91x = 28,132,747.34 × 11,218,688.66
  4. Step 4: Simplify right side
    20,386,045.91x = 315,612,533,572,141.56
  5. Step 5: Solve for x
    x = 315,612,533,572,141.56/20,386,045.91
  6. Step 6: Final answer
    x = 15,481,792.54

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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.