Home / 42,587.20-63,833.28-18,899.56

Finding the Fourth Proportional to 42,587.20, 63,833.28 and 18,899.56

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Solution

The fourth proportional to 42,587.20, 63,833.28 and 18,899.56 is: 28,328.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,587.20 : 63,833.28 = 18,899.56 : x
  2. Step 2: Convert to fraction form
    42,587.20/63,833.28 = 18,899.56/x
  3. Step 3: Cross multiply
    42,587.20x = 63,833.28 × 18,899.56
  4. Step 4: Simplify right side
    42,587.20x = 1,206,420,905.36
  5. Step 5: Solve for x
    x = 1,206,420,905.36/42,587.20
  6. Step 6: Final answer
    x = 28,328.25

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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.