Home / 42,015.85-63,042.91-15,722.64

Finding the Fourth Proportional to 42,015.85, 63,042.91 and 15,722.64

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Solution

The fourth proportional to 42,015.85, 63,042.91 and 15,722.64 is: 23,591.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,015.85 : 63,042.91 = 15,722.64 : x
  2. Step 2: Convert to fraction form
    42,015.85/63,042.91 = 15,722.64/x
  3. Step 3: Cross multiply
    42,015.85x = 63,042.91 × 15,722.64
  4. Step 4: Simplify right side
    42,015.85x = 991,200,939.18
  5. Step 5: Solve for x
    x = 991,200,939.18/42,015.85
  6. Step 6: Final answer
    x = 23,591.12

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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.