Home / 19,331.76-29,008.80-10,447.12

Finding the Fourth Proportional to 19,331.76, 29,008.80 and 10,447.12

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Solution

The fourth proportional to 19,331.76, 29,008.80 and 10,447.12 is: 15,676.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,331.76 : 29,008.80 = 10,447.12 : x
  2. Step 2: Convert to fraction form
    19,331.76/29,008.80 = 10,447.12/x
  3. Step 3: Cross multiply
    19,331.76x = 29,008.80 × 10,447.12
  4. Step 4: Simplify right side
    19,331.76x = 303,058,414.66
  5. Step 5: Solve for x
    x = 303,058,414.66/19,331.76
  6. Step 6: Final answer
    x = 15,676.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.