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Finding the Fourth Proportional to 16,615.80, 24,918.30 and 5,520.60

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Solution

The fourth proportional to 16,615.80, 24,918.30 and 5,520.60 is: 8,279.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,615.80 : 24,918.30 = 5,520.60 : x
  2. Step 2: Convert to fraction form
    16,615.80/24,918.30 = 5,520.60/x
  3. Step 3: Cross multiply
    16,615.80x = 24,918.30 × 5,520.60
  4. Step 4: Simplify right side
    16,615.80x = 137,563,966.98
  5. Step 5: Solve for x
    x = 137,563,966.98/16,615.80
  6. Step 6: Final answer
    x = 8,279.11

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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.