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Finding the Fourth Proportional to 15,019.18, 20,726.85 and 8,304.88

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Solution

The fourth proportional to 15,019.18, 20,726.85 and 8,304.88 is: 11,460.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,019.18 : 20,726.85 = 8,304.88 : x
  2. Step 2: Convert to fraction form
    15,019.18/20,726.85 = 8,304.88/x
  3. Step 3: Cross multiply
    15,019.18x = 20,726.85 × 8,304.88
  4. Step 4: Simplify right side
    15,019.18x = 172,134,002.03
  5. Step 5: Solve for x
    x = 172,134,002.03/15,019.18
  6. Step 6: Final answer
    x = 11,460.95

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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.