Home / 42,002.80-63,004.20-15,702.10

Finding the Fourth Proportional to 42,002.80, 63,004.20 and 15,702.10

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Solution

The fourth proportional to 42,002.80, 63,004.20 and 15,702.10 is: 23,553.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,002.80 : 63,004.20 = 15,702.10 : x
  2. Step 2: Convert to fraction form
    42,002.80/63,004.20 = 15,702.10/x
  3. Step 3: Cross multiply
    42,002.80x = 63,004.20 × 15,702.10
  4. Step 4: Simplify right side
    42,002.80x = 989,298,248.82
  5. Step 5: Solve for x
    x = 989,298,248.82/42,002.80
  6. Step 6: Final answer
    x = 23,553.15

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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.