Home / 21,505.14-29,686.50-12,549.24

Finding the Fourth Proportional to 21,505.14, 29,686.50 and 12,549.24

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Solution

The fourth proportional to 21,505.14, 29,686.50 and 12,549.24 is: 17,323.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,505.14 : 29,686.50 = 12,549.24 : x
  2. Step 2: Convert to fraction form
    21,505.14/29,686.50 = 12,549.24/x
  3. Step 3: Cross multiply
    21,505.14x = 29,686.50 × 12,549.24
  4. Step 4: Simplify right side
    21,505.14x = 372,543,013.26
  5. Step 5: Solve for x
    x = 372,543,013.26/21,505.14
  6. Step 6: Final answer
    x = 17,323.44

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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.