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Finding the Fourth Proportional to 16,988.70, 25,487.10 and 8,216.40

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Solution

The fourth proportional to 16,988.70, 25,487.10 and 8,216.40 is: 12,326.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,988.70 : 25,487.10 = 8,216.40 : x
  2. Step 2: Convert to fraction form
    16,988.70/25,487.10 = 8,216.40/x
  3. Step 3: Cross multiply
    16,988.70x = 25,487.10 × 8,216.40
  4. Step 4: Simplify right side
    16,988.70x = 209,412,208.44
  5. Step 5: Solve for x
    x = 209,412,208.44/16,988.70
  6. Step 6: Final answer
    x = 12,326.56

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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.