Home / 20,409,761.90-28,165,472.96-11,242,404.65

Finding the Fourth Proportional to 20,409,761.90, 28,165,472.96 and 11,242,404.65

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Solution

The fourth proportional to 20,409,761.90, 28,165,472.96 and 11,242,404.65 is: 15,514,519.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409,761.90 : 28,165,472.96 = 11,242,404.65 : x
  2. Step 2: Convert to fraction form
    20,409,761.90/28,165,472.96 = 11,242,404.65/x
  3. Step 3: Cross multiply
    20,409,761.90x = 28,165,472.96 × 11,242,404.65
  4. Step 4: Simplify right side
    20,409,761.90x = 316,647,643,977,913.81
  5. Step 5: Solve for x
    x = 316,647,643,977,913.81/20,409,761.90
  6. Step 6: Final answer
    x = 15,514,519.26

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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.