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Finding the Fourth Proportional to 16,854.70, 25,253.70 and 13,331.20

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Solution

The fourth proportional to 16,854.70, 25,253.70 and 13,331.20 is: 19,974.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,854.70 : 25,253.70 = 13,331.20 : x
  2. Step 2: Convert to fraction form
    16,854.70/25,253.70 = 13,331.20/x
  3. Step 3: Cross multiply
    16,854.70x = 25,253.70 × 13,331.20
  4. Step 4: Simplify right side
    16,854.70x = 336,662,125.44
  5. Step 5: Solve for x
    x = 336,662,125.44/16,854.70
  6. Step 6: Final answer
    x = 19,974.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.