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Finding the Fourth Proportional to 15,101.97, 20,837.61 and 8,726.28

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Solution

The fourth proportional to 15,101.97, 20,837.61 and 8,726.28 is: 12,040.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,101.97 : 20,837.61 = 8,726.28 : x
  2. Step 2: Convert to fraction form
    15,101.97/20,837.61 = 8,726.28/x
  3. Step 3: Cross multiply
    15,101.97x = 20,837.61 × 8,726.28
  4. Step 4: Simplify right side
    15,101.97x = 181,834,819.39
  5. Step 5: Solve for x
    x = 181,834,819.39/15,101.97
  6. Step 6: Final answer
    x = 12,040.47

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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.