Home / 42,138.51-63,217.20-15,843.48

Finding the Fourth Proportional to 42,138.51, 63,217.20 and 15,843.48

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Solution

The fourth proportional to 42,138.51, 63,217.20 and 15,843.48 is: 23,768.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,138.51 : 63,217.20 = 15,843.48 : x
  2. Step 2: Convert to fraction form
    42,138.51/63,217.20 = 15,843.48/x
  3. Step 3: Cross multiply
    42,138.51x = 63,217.20 × 15,843.48
  4. Step 4: Simplify right side
    42,138.51x = 1,001,580,443.86
  5. Step 5: Solve for x
    x = 1,001,580,443.86/42,138.51
  6. Step 6: Final answer
    x = 23,768.77

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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.