Home / 25,138.38-34,691.39-13,808.36

Finding the Fourth Proportional to 25,138.38, 34,691.39 and 13,808.36

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Solution

The fourth proportional to 25,138.38, 34,691.39 and 13,808.36 is: 19,055.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,138.38 : 34,691.39 = 13,808.36 : x
  2. Step 2: Convert to fraction form
    25,138.38/34,691.39 = 13,808.36/x
  3. Step 3: Cross multiply
    25,138.38x = 34,691.39 × 13,808.36
  4. Step 4: Simplify right side
    25,138.38x = 479,031,076.35
  5. Step 5: Solve for x
    x = 479,031,076.35/25,138.38
  6. Step 6: Final answer
    x = 19,055.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.