Home / 21,534.07-29,726.13-20,188.93

Finding the Fourth Proportional to 21,534.07, 29,726.13 and 20,188.93

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Solution

The fourth proportional to 21,534.07, 29,726.13 and 20,188.93 is: 27,869.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,534.07 : 29,726.13 = 20,188.93 : x
  2. Step 2: Convert to fraction form
    21,534.07/29,726.13 = 20,188.93/x
  3. Step 3: Cross multiply
    21,534.07x = 29,726.13 × 20,188.93
  4. Step 4: Simplify right side
    21,534.07x = 600,138,757.74
  5. Step 5: Solve for x
    x = 600,138,757.74/21,534.07
  6. Step 6: Final answer
    x = 27,869.27

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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.