Home / 21,510.26-29,687.61-12,557.73

Finding the Fourth Proportional to 21,510.26, 29,687.61 and 12,557.73

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Solution

The fourth proportional to 21,510.26, 29,687.61 and 12,557.73 is: 17,331.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,510.26 : 29,687.61 = 12,557.73 : x
  2. Step 2: Convert to fraction form
    21,510.26/29,687.61 = 12,557.73/x
  3. Step 3: Cross multiply
    21,510.26x = 29,687.61 × 12,557.73
  4. Step 4: Simplify right side
    21,510.26x = 372,809,149.15
  5. Step 5: Solve for x
    x = 372,809,149.15/21,510.26
  6. Step 6: Final answer
    x = 17,331.69

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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.