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Finding the Fourth Proportional to 18,326.79, 25,274.25 and 15,500.07

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Solution

The fourth proportional to 18,326.79, 25,274.25 and 15,500.07 is: 21,375.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,326.79 : 25,274.25 = 15,500.07 : x
  2. Step 2: Convert to fraction form
    18,326.79/25,274.25 = 15,500.07/x
  3. Step 3: Cross multiply
    18,326.79x = 25,274.25 × 15,500.07
  4. Step 4: Simplify right side
    18,326.79x = 391,752,644.20
  5. Step 5: Solve for x
    x = 391,752,644.20/18,326.79
  6. Step 6: Final answer
    x = 21,375.96

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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.