Home / 12,000.89-16,561.11-6,623.38

Finding the Fourth Proportional to 12,000.89, 16,561.11 and 6,623.38

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Solution

The fourth proportional to 12,000.89, 16,561.11 and 6,623.38 is: 9,140.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.89 : 16,561.11 = 6,623.38 : x
  2. Step 2: Convert to fraction form
    12,000.89/16,561.11 = 6,623.38/x
  3. Step 3: Cross multiply
    12,000.89x = 16,561.11 × 6,623.38
  4. Step 4: Simplify right side
    12,000.89x = 109,690,524.75
  5. Step 5: Solve for x
    x = 109,690,524.75/12,000.89
  6. Step 6: Final answer
    x = 9,140.20

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Half scale
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Double scale
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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.