Home / 42,590.88-63,840.42-20,356.97

Finding the Fourth Proportional to 42,590.88, 63,840.42 and 20,356.97

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Solution

The fourth proportional to 42,590.88, 63,840.42 and 20,356.97 is: 30,513.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,590.88 : 63,840.42 = 20,356.97 : x
  2. Step 2: Convert to fraction form
    42,590.88/63,840.42 = 20,356.97/x
  3. Step 3: Cross multiply
    42,590.88x = 63,840.42 × 20,356.97
  4. Step 4: Simplify right side
    42,590.88x = 1,299,597,195.53
  5. Step 5: Solve for x
    x = 1,299,597,195.53/42,590.88
  6. Step 6: Final answer
    x = 30,513.51

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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.