Home / 20,782,155.60-28,678,527.42-11,489,134.20

Finding the Fourth Proportional to 20,782,155.60, 28,678,527.42 and 11,489,134.20

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Solution

The fourth proportional to 20,782,155.60, 28,678,527.42 and 11,489,134.20 is: 15,854,536.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,782,155.60 : 28,678,527.42 = 11,489,134.20 : x
  2. Step 2: Convert to fraction form
    20,782,155.60/28,678,527.42 = 11,489,134.20/x
  3. Step 3: Cross multiply
    20,782,155.60x = 28,678,527.42 × 11,489,134.20
  4. Step 4: Simplify right side
    20,782,155.60x = 329,491,450,186,759.75
  5. Step 5: Solve for x
    x = 329,491,450,186,759.75/20,782,155.60
  6. Step 6: Final answer
    x = 15,854,536.77

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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.