Home / 20,771,913.74-28,663,739.19-11,479,372.61

Finding the Fourth Proportional to 20,771,913.74, 28,663,739.19 and 11,479,372.61

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Solution

The fourth proportional to 20,771,913.74, 28,663,739.19 and 11,479,372.61 is: 15,840,704.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771,913.74 : 28,663,739.19 = 11,479,372.61 : x
  2. Step 2: Convert to fraction form
    20,771,913.74/28,663,739.19 = 11,479,372.61/x
  3. Step 3: Cross multiply
    20,771,913.74x = 28,663,739.19 × 11,479,372.61
  4. Step 4: Simplify right side
    20,771,913.74x = 329,041,742,414,550.94
  5. Step 5: Solve for x
    x = 329,041,742,414,550.94/20,771,913.74
  6. Step 6: Final answer
    x = 15,840,704.26

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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.