Home / 20,172.52-30,249.60-8,479.36

Finding the Fourth Proportional to 20,172.52, 30,249.60 and 8,479.36

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Solution

The fourth proportional to 20,172.52, 30,249.60 and 8,479.36 is: 12,715.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.52 : 30,249.60 = 8,479.36 : x
  2. Step 2: Convert to fraction form
    20,172.52/30,249.60 = 8,479.36/x
  3. Step 3: Cross multiply
    20,172.52x = 30,249.60 × 8,479.36
  4. Step 4: Simplify right side
    20,172.52x = 256,497,248.26
  5. Step 5: Solve for x
    x = 256,497,248.26/20,172.52
  6. Step 6: Final answer
    x = 12,715.18

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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.