Home / 21,490.08-29,654.40-12,538.36

Finding the Fourth Proportional to 21,490.08, 29,654.40 and 12,538.36

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Solution

The fourth proportional to 21,490.08, 29,654.40 and 12,538.36 is: 17,301.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,490.08 : 29,654.40 = 12,538.36 : x
  2. Step 2: Convert to fraction form
    21,490.08/29,654.40 = 12,538.36/x
  3. Step 3: Cross multiply
    21,490.08x = 29,654.40 × 12,538.36
  4. Step 4: Simplify right side
    21,490.08x = 371,817,542.78
  5. Step 5: Solve for x
    x = 371,817,542.78/21,490.08
  6. Step 6: Final answer
    x = 17,301.82

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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.