Home / 20,713.31-28,586.36-12,760.19

Finding the Fourth Proportional to 20,713.31, 28,586.36 and 12,760.19

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Solution

The fourth proportional to 20,713.31, 28,586.36 and 12,760.19 is: 17,610.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.31 : 28,586.36 = 12,760.19 : x
  2. Step 2: Convert to fraction form
    20,713.31/28,586.36 = 12,760.19/x
  3. Step 3: Cross multiply
    20,713.31x = 28,586.36 × 12,760.19
  4. Step 4: Simplify right side
    20,713.31x = 364,767,321.21
  5. Step 5: Solve for x
    x = 364,767,321.21/20,713.31
  6. Step 6: Final answer
    x = 17,610.29

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.