Home / 12,545.45-18,818.18-3,186.17

Finding the Fourth Proportional to 12,545.45, 18,818.18 and 3,186.17

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Solution

The fourth proportional to 12,545.45, 18,818.18 and 3,186.17 is: 4,779.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,545.45 : 18,818.18 = 3,186.17 : x
  2. Step 2: Convert to fraction form
    12,545.45/18,818.18 = 3,186.17/x
  3. Step 3: Cross multiply
    12,545.45x = 18,818.18 × 3,186.17
  4. Step 4: Simplify right side
    12,545.45x = 59,957,873.53
  5. Step 5: Solve for x
    x = 59,957,873.53/12,545.45
  6. Step 6: Final answer
    x = 4,779.25

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Double scale
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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.