Home / 12,613.36-18,920.04-5,689.84

Finding the Fourth Proportional to 12,613.36, 18,920.04 and 5,689.84

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Solution

The fourth proportional to 12,613.36, 18,920.04 and 5,689.84 is: 8,534.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.36 : 18,920.04 = 5,689.84 : x
  2. Step 2: Convert to fraction form
    12,613.36/18,920.04 = 5,689.84/x
  3. Step 3: Cross multiply
    12,613.36x = 18,920.04 × 5,689.84
  4. Step 4: Simplify right side
    12,613.36x = 107,652,000.39
  5. Step 5: Solve for x
    x = 107,652,000.39/12,613.36
  6. Step 6: Final answer
    x = 8,534.76

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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.