Home / 12,124.13-18,186.20-3,916.13

Finding the Fourth Proportional to 12,124.13, 18,186.20 and 3,916.13

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Solution

The fourth proportional to 12,124.13, 18,186.20 and 3,916.13 is: 5,874.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,124.13 : 18,186.20 = 3,916.13 : x
  2. Step 2: Convert to fraction form
    12,124.13/18,186.20 = 3,916.13/x
  3. Step 3: Cross multiply
    12,124.13x = 18,186.20 × 3,916.13
  4. Step 4: Simplify right side
    12,124.13x = 71,219,412.89
  5. Step 5: Solve for x
    x = 71,219,412.89/12,124.13
  6. Step 6: Final answer
    x = 5,874.19

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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.