Home / 15,945.20-22,003.08-9,972.80

Finding the Fourth Proportional to 15,945.20, 22,003.08 and 9,972.80

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Solution

The fourth proportional to 15,945.20, 22,003.08 and 9,972.80 is: 13,761.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,945.20 : 22,003.08 = 9,972.80 : x
  2. Step 2: Convert to fraction form
    15,945.20/22,003.08 = 9,972.80/x
  3. Step 3: Cross multiply
    15,945.20x = 22,003.08 × 9,972.80
  4. Step 4: Simplify right side
    15,945.20x = 219,432,316.22
  5. Step 5: Solve for x
    x = 219,432,316.22/15,945.20
  6. Step 6: Final answer
    x = 13,761.65

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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.