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Finding the Fourth Proportional to 25,138.99, 34,689.18 and 15,067.18

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Solution

The fourth proportional to 25,138.99, 34,689.18 and 15,067.18 is: 20,791.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,138.99 : 34,689.18 = 15,067.18 : x
  2. Step 2: Convert to fraction form
    25,138.99/34,689.18 = 15,067.18/x
  3. Step 3: Cross multiply
    25,138.99x = 34,689.18 × 15,067.18
  4. Step 4: Simplify right side
    25,138.99x = 522,668,119.11
  5. Step 5: Solve for x
    x = 522,668,119.11/25,138.99
  6. Step 6: Final answer
    x = 20,791.13

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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.