Home / 38,520-57,687.12-18,749.52

Finding the Fourth Proportional to 38,520, 57,687.12 and 18,749.52

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Solution

The fourth proportional to 38,520, 57,687.12 and 18,749.52 is: 28,079.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,520 : 57,687.12 = 18,749.52 : x
  2. Step 2: Convert to fraction form
    38,520/57,687.12 = 18,749.52/x
  3. Step 3: Cross multiply
    38,520x = 57,687.12 × 18,749.52
  4. Step 4: Simplify right side
    38,520x = 1,081,605,810.18
  5. Step 5: Solve for x
    x = 1,081,605,810.18/38,520
  6. Step 6: Final answer
    x = 28,079.07

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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.