Home / 20,580.26-28,400.87-11,148.83

Finding the Fourth Proportional to 20,580.26, 28,400.87 and 11,148.83

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Solution

The fourth proportional to 20,580.26, 28,400.87 and 11,148.83 is: 15,385.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.26 : 28,400.87 = 11,148.83 : x
  2. Step 2: Convert to fraction form
    20,580.26/28,400.87 = 11,148.83/x
  3. Step 3: Cross multiply
    20,580.26x = 28,400.87 × 11,148.83
  4. Step 4: Simplify right side
    20,580.26x = 316,636,273.73
  5. Step 5: Solve for x
    x = 316,636,273.73/20,580.26
  6. Step 6: Final answer
    x = 15,385.44

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1.5x scale

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.