Home / 20,719.76-31,079.22-7,568.60

Finding the Fourth Proportional to 20,719.76, 31,079.22 and 7,568.60

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Solution

The fourth proportional to 20,719.76, 31,079.22 and 7,568.60 is: 11,352.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.76 : 31,079.22 = 7,568.60 : x
  2. Step 2: Convert to fraction form
    20,719.76/31,079.22 = 7,568.60/x
  3. Step 3: Cross multiply
    20,719.76x = 31,079.22 × 7,568.60
  4. Step 4: Simplify right side
    20,719.76x = 235,226,184.49
  5. Step 5: Solve for x
    x = 235,226,184.49/20,719.76
  6. Step 6: Final answer
    x = 11,352.75

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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.