Home / 25,613.28-38,407.68-13,139.28

Finding the Fourth Proportional to 25,613.28, 38,407.68 and 13,139.28

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Solution

The fourth proportional to 25,613.28, 38,407.68 and 13,139.28 is: 19,702.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,613.28 : 38,407.68 = 13,139.28 : x
  2. Step 2: Convert to fraction form
    25,613.28/38,407.68 = 13,139.28/x
  3. Step 3: Cross multiply
    25,613.28x = 38,407.68 × 13,139.28
  4. Step 4: Simplify right side
    25,613.28x = 504,649,261.67
  5. Step 5: Solve for x
    x = 504,649,261.67/25,613.28
  6. Step 6: Final answer
    x = 19,702.64

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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.