Home / 21,663.57-29,897.72-13,163.73

Finding the Fourth Proportional to 21,663.57, 29,897.72 and 13,163.73

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Solution

The fourth proportional to 21,663.57, 29,897.72 and 13,163.73 is: 18,167.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,663.57 : 29,897.72 = 13,163.73 : x
  2. Step 2: Convert to fraction form
    21,663.57/29,897.72 = 13,163.73/x
  3. Step 3: Cross multiply
    21,663.57x = 29,897.72 × 13,163.73
  4. Step 4: Simplify right side
    21,663.57x = 393,565,513.70
  5. Step 5: Solve for x
    x = 393,565,513.70/21,663.57
  6. Step 6: Final answer
    x = 18,167.16

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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.