Home / 20,279.76-30,419.64-8,585.04

Finding the Fourth Proportional to 20,279.76, 30,419.64 and 8,585.04

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Solution

The fourth proportional to 20,279.76, 30,419.64 and 8,585.04 is: 12,877.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.76 : 30,419.64 = 8,585.04 : x
  2. Step 2: Convert to fraction form
    20,279.76/30,419.64 = 8,585.04/x
  3. Step 3: Cross multiply
    20,279.76x = 30,419.64 × 8,585.04
  4. Step 4: Simplify right side
    20,279.76x = 261,153,826.19
  5. Step 5: Solve for x
    x = 261,153,826.19/20,279.76
  6. Step 6: Final answer
    x = 12,877.56

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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.