Home / 18,613.10-25,686.18-10,115.29

Finding the Fourth Proportional to 18,613.10, 25,686.18 and 10,115.29

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Solution

The fourth proportional to 18,613.10, 25,686.18 and 10,115.29 is: 13,959.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.10 : 25,686.18 = 10,115.29 : x
  2. Step 2: Convert to fraction form
    18,613.10/25,686.18 = 10,115.29/x
  3. Step 3: Cross multiply
    18,613.10x = 25,686.18 × 10,115.29
  4. Step 4: Simplify right side
    18,613.10x = 259,823,159.69
  5. Step 5: Solve for x
    x = 259,823,159.69/18,613.10
  6. Step 6: Final answer
    x = 13,959.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.