Home / 42,352.44-63,553.26-18,978.90

Finding the Fourth Proportional to 42,352.44, 63,553.26 and 18,978.90

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Solution

The fourth proportional to 42,352.44, 63,553.26 and 18,978.90 is: 28,479.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,352.44 : 63,553.26 = 18,978.90 : x
  2. Step 2: Convert to fraction form
    42,352.44/63,553.26 = 18,978.90/x
  3. Step 3: Cross multiply
    42,352.44x = 63,553.26 × 18,978.90
  4. Step 4: Simplify right side
    42,352.44x = 1,206,170,966.21
  5. Step 5: Solve for x
    x = 1,206,170,966.21/42,352.44
  6. Step 6: Final answer
    x = 28,479.37

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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.