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Finding the Fourth Proportional to 12,174.72, 18,262.10 and 2,940.72

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Solution

The fourth proportional to 12,174.72, 18,262.10 and 2,940.72 is: 4,411.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,174.72 : 18,262.10 = 2,940.72 : x
  2. Step 2: Convert to fraction form
    12,174.72/18,262.10 = 2,940.72/x
  3. Step 3: Cross multiply
    12,174.72x = 18,262.10 × 2,940.72
  4. Step 4: Simplify right side
    12,174.72x = 53,703,722.71
  5. Step 5: Solve for x
    x = 53,703,722.71/12,174.72
  6. Step 6: Final answer
    x = 4,411.08

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Similar ratio
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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.