Home / 42,428.13-63,627.30-12,434.13

Finding the Fourth Proportional to 42,428.13, 63,627.30 and 12,434.13

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Solution

The fourth proportional to 42,428.13, 63,627.30 and 12,434.13 is: 18,646.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,428.13 : 63,627.30 = 12,434.13 : x
  2. Step 2: Convert to fraction form
    42,428.13/63,627.30 = 12,434.13/x
  3. Step 3: Cross multiply
    42,428.13x = 63,627.30 × 12,434.13
  4. Step 4: Simplify right side
    42,428.13x = 791,150,119.75
  5. Step 5: Solve for x
    x = 791,150,119.75/42,428.13
  6. Step 6: Final answer
    x = 18,646.83

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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.