Home / 38,387.87-57,587.19-13,422.25

Finding the Fourth Proportional to 38,387.87, 57,587.19 and 13,422.25

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Solution

The fourth proportional to 38,387.87, 57,587.19 and 13,422.25 is: 20,135.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,387.87 : 57,587.19 = 13,422.25 : x
  2. Step 2: Convert to fraction form
    38,387.87/57,587.19 = 13,422.25/x
  3. Step 3: Cross multiply
    38,387.87x = 57,587.19 × 13,422.25
  4. Step 4: Simplify right side
    38,387.87x = 772,949,682.63
  5. Step 5: Solve for x
    x = 772,949,682.63/38,387.87
  6. Step 6: Final answer
    x = 20,135.26

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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.