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Finding the Fourth Proportional to 16,939.19, 25,424.39 and 8,625.20

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Solution

The fourth proportional to 16,939.19, 25,424.39 and 8,625.20 is: 12,945.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,939.19 : 25,424.39 = 8,625.20 : x
  2. Step 2: Convert to fraction form
    16,939.19/25,424.39 = 8,625.20/x
  3. Step 3: Cross multiply
    16,939.19x = 25,424.39 × 8,625.20
  4. Step 4: Simplify right side
    16,939.19x = 219,290,343.07
  5. Step 5: Solve for x
    x = 219,290,343.07/16,939.19
  6. Step 6: Final answer
    x = 12,945.74

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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.