Home / 42,301.90-63,447.34-20,129.38

Finding the Fourth Proportional to 42,301.90, 63,447.34 and 20,129.38

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Solution

The fourth proportional to 42,301.90, 63,447.34 and 20,129.38 is: 30,191.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,301.90 : 63,447.34 = 20,129.38 : x
  2. Step 2: Convert to fraction form
    42,301.90/63,447.34 = 20,129.38/x
  3. Step 3: Cross multiply
    42,301.90x = 63,447.34 × 20,129.38
  4. Step 4: Simplify right side
    42,301.90x = 1,277,155,616.85
  5. Step 5: Solve for x
    x = 1,277,155,616.85/42,301.90
  6. Step 6: Final answer
    x = 30,191.45

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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.