Home / 42,543.79-63,815.67-11,378.23

Finding the Fourth Proportional to 42,543.79, 63,815.67 and 11,378.23

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Solution

The fourth proportional to 42,543.79, 63,815.67 and 11,378.23 is: 17,067.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,543.79 : 63,815.67 = 11,378.23 : x
  2. Step 2: Convert to fraction form
    42,543.79/63,815.67 = 11,378.23/x
  3. Step 3: Cross multiply
    42,543.79x = 63,815.67 × 11,378.23
  4. Step 4: Simplify right side
    42,543.79x = 726,109,370.86
  5. Step 5: Solve for x
    x = 726,109,370.86/42,543.79
  6. Step 6: Final answer
    x = 17,067.34

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Double scale
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Similar ratio
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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.