Home / 21,012.30-29,001.92-13,060.53

Finding the Fourth Proportional to 21,012.30, 29,001.92 and 13,060.53

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Solution

The fourth proportional to 21,012.30, 29,001.92 and 13,060.53 is: 18,026.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012.30 : 29,001.92 = 13,060.53 : x
  2. Step 2: Convert to fraction form
    21,012.30/29,001.92 = 13,060.53/x
  3. Step 3: Cross multiply
    21,012.30x = 29,001.92 × 13,060.53
  4. Step 4: Simplify right side
    21,012.30x = 378,780,380.91
  5. Step 5: Solve for x
    x = 378,780,380.91/21,012.30
  6. Step 6: Final answer
    x = 18,026.60

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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.