Home / 10,613.12-15,921.98-3,218.14

Finding the Fourth Proportional to 10,613.12, 15,921.98 and 3,218.14

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Solution

The fourth proportional to 10,613.12, 15,921.98 and 3,218.14 is: 4,827.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,613.12 : 15,921.98 = 3,218.14 : x
  2. Step 2: Convert to fraction form
    10,613.12/15,921.98 = 3,218.14/x
  3. Step 3: Cross multiply
    10,613.12x = 15,921.98 × 3,218.14
  4. Step 4: Simplify right side
    10,613.12x = 51,239,160.72
  5. Step 5: Solve for x
    x = 51,239,160.72/10,613.12
  6. Step 6: Final answer
    x = 4,827.91

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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.