Home / 20,713.56-28,586.70-12,760.44

Finding the Fourth Proportional to 20,713.56, 28,586.70 and 12,760.44

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Solution

The fourth proportional to 20,713.56, 28,586.70 and 12,760.44 is: 17,610.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.56 : 28,586.70 = 12,760.44 : x
  2. Step 2: Convert to fraction form
    20,713.56/28,586.70 = 12,760.44/x
  3. Step 3: Cross multiply
    20,713.56x = 28,586.70 × 12,760.44
  4. Step 4: Simplify right side
    20,713.56x = 364,778,870.15
  5. Step 5: Solve for x
    x = 364,778,870.15/20,713.56
  6. Step 6: Final answer
    x = 17,610.63

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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.