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Finding the Fourth Proportional to 18,067.47, 26,981.13 and 17,871.99

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Solution

The fourth proportional to 18,067.47, 26,981.13 and 17,871.99 is: 26,689.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,067.47 : 26,981.13 = 17,871.99 : x
  2. Step 2: Convert to fraction form
    18,067.47/26,981.13 = 17,871.99/x
  3. Step 3: Cross multiply
    18,067.47x = 26,981.13 × 17,871.99
  4. Step 4: Simplify right side
    18,067.47x = 482,206,485.55
  5. Step 5: Solve for x
    x = 482,206,485.55/18,067.47
  6. Step 6: Final answer
    x = 26,689.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.