Home / 20,672.20-28,525.46-12,287.56

Finding the Fourth Proportional to 20,672.20, 28,525.46 and 12,287.56

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Solution

The fourth proportional to 20,672.20, 28,525.46 and 12,287.56 is: 16,955.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.20 : 28,525.46 = 12,287.56 : x
  2. Step 2: Convert to fraction form
    20,672.20/28,525.46 = 12,287.56/x
  3. Step 3: Cross multiply
    20,672.20x = 28,525.46 × 12,287.56
  4. Step 4: Simplify right side
    20,672.20x = 350,508,301.28
  5. Step 5: Solve for x
    x = 350,508,301.28/20,672.20
  6. Step 6: Final answer
    x = 16,955.54

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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.