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Finding the Fourth Proportional to 15,999.73, 22,079.59 and 9,289.28

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Solution

The fourth proportional to 15,999.73, 22,079.59 and 9,289.28 is: 12,819.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,999.73 : 22,079.59 = 9,289.28 : x
  2. Step 2: Convert to fraction form
    15,999.73/22,079.59 = 9,289.28/x
  3. Step 3: Cross multiply
    15,999.73x = 22,079.59 × 9,289.28
  4. Step 4: Simplify right side
    15,999.73x = 205,103,525.77
  5. Step 5: Solve for x
    x = 205,103,525.77/15,999.73
  6. Step 6: Final answer
    x = 12,819.19

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Similar ratio
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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.