Home / 38,138.58-57,145.14-13,165.02

Finding the Fourth Proportional to 38,138.58, 57,145.14 and 13,165.02

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Solution

The fourth proportional to 38,138.58, 57,145.14 and 13,165.02 is: 19,725.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,138.58 : 57,145.14 = 13,165.02 : x
  2. Step 2: Convert to fraction form
    38,138.58/57,145.14 = 13,165.02/x
  3. Step 3: Cross multiply
    38,138.58x = 57,145.14 × 13,165.02
  4. Step 4: Simplify right side
    38,138.58x = 752,316,911.00
  5. Step 5: Solve for x
    x = 752,316,911.00/38,138.58
  6. Step 6: Final answer
    x = 19,725.88

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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.