Home / 15,019.31-20,726.28-8,304.76

Finding the Fourth Proportional to 15,019.31, 20,726.28 and 8,304.76

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Solution

The fourth proportional to 15,019.31, 20,726.28 and 8,304.76 is: 11,460.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,019.31 : 20,726.28 = 8,304.76 : x
  2. Step 2: Convert to fraction form
    15,019.31/20,726.28 = 8,304.76/x
  3. Step 3: Cross multiply
    15,019.31x = 20,726.28 × 8,304.76
  4. Step 4: Simplify right side
    15,019.31x = 172,126,781.09
  5. Step 5: Solve for x
    x = 172,126,781.09/15,019.31
  6. Step 6: Final answer
    x = 11,460.37

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Half scale
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Double scale
Find fourth proportional to 15,020.31, 20,727.66 and 8,305.76
Similar ratio
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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.