Home / 20,999.76-29,005.62-15,248.04

Finding the Fourth Proportional to 20,999.76, 29,005.62 and 15,248.04

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Solution

The fourth proportional to 20,999.76, 29,005.62 and 15,248.04 is: 21,061.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,999.76 : 29,005.62 = 15,248.04 : x
  2. Step 2: Convert to fraction form
    20,999.76/29,005.62 = 15,248.04/x
  3. Step 3: Cross multiply
    20,999.76x = 29,005.62 × 15,248.04
  4. Step 4: Simplify right side
    20,999.76x = 442,278,853.98
  5. Step 5: Solve for x
    x = 442,278,853.98/20,999.76
  6. Step 6: Final answer
    x = 21,061.14

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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.