Home / 42,753.47-64,131.30-20,258.87

Finding the Fourth Proportional to 42,753.47, 64,131.30 and 20,258.87

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Solution

The fourth proportional to 42,753.47, 64,131.30 and 20,258.87 is: 30,388.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,753.47 : 64,131.30 = 20,258.87 : x
  2. Step 2: Convert to fraction form
    42,753.47/64,131.30 = 20,258.87/x
  3. Step 3: Cross multiply
    42,753.47x = 64,131.30 × 20,258.87
  4. Step 4: Simplify right side
    42,753.47x = 1,299,227,348.97
  5. Step 5: Solve for x
    x = 1,299,227,348.97/42,753.47
  6. Step 6: Final answer
    x = 30,388.82

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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.