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Finding the Fourth Proportional to 12,000.10, 16,555.02 and 7,520.80

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Solution

The fourth proportional to 12,000.10, 16,555.02 and 7,520.80 is: 10,375.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.10 : 16,555.02 = 7,520.80 : x
  2. Step 2: Convert to fraction form
    12,000.10/16,555.02 = 7,520.80/x
  3. Step 3: Cross multiply
    12,000.10x = 16,555.02 × 7,520.80
  4. Step 4: Simplify right side
    12,000.10x = 124,506,994.42
  5. Step 5: Solve for x
    x = 124,506,994.42/12,000.10
  6. Step 6: Final answer
    x = 10,375.50

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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.