Home / 20,404.60-28,161.19-11,332.00

Finding the Fourth Proportional to 20,404.60, 28,161.19 and 11,332.00

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Solution

The fourth proportional to 20,404.60, 28,161.19 and 11,332.00 is: 15,639.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.60 : 28,161.19 = 11,332.00 : x
  2. Step 2: Convert to fraction form
    20,404.60/28,161.19 = 11,332.00/x
  3. Step 3: Cross multiply
    20,404.60x = 28,161.19 × 11,332.00
  4. Step 4: Simplify right side
    20,404.60x = 319,122,689.65
  5. Step 5: Solve for x
    x = 319,122,689.65/20,404.60
  6. Step 6: Final answer
    x = 15,639.74

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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.