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Finding the Fourth Proportional to 18,862.88, 26,042.18 and 12,494.90

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Solution

The fourth proportional to 18,862.88, 26,042.18 and 12,494.90 is: 17,250.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,862.88 : 26,042.18 = 12,494.90 : x
  2. Step 2: Convert to fraction form
    18,862.88/26,042.18 = 12,494.90/x
  3. Step 3: Cross multiply
    18,862.88x = 26,042.18 × 12,494.90
  4. Step 4: Simplify right side
    18,862.88x = 325,394,242.20
  5. Step 5: Solve for x
    x = 325,394,242.20/18,862.88
  6. Step 6: Final answer
    x = 17,250.51

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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.