Home / 12,186.28-18,286.98-5,613.40

Finding the Fourth Proportional to 12,186.28, 18,286.98 and 5,613.40

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Solution

The fourth proportional to 12,186.28, 18,286.98 and 5,613.40 is: 8,423.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.28 : 18,286.98 = 5,613.40 : x
  2. Step 2: Convert to fraction form
    12,186.28/18,286.98 = 5,613.40/x
  3. Step 3: Cross multiply
    12,186.28x = 18,286.98 × 5,613.40
  4. Step 4: Simplify right side
    12,186.28x = 102,652,133.53
  5. Step 5: Solve for x
    x = 102,652,133.53/12,186.28
  6. Step 6: Final answer
    x = 8,423.58

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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.