Home / 20,272.08-30,398.40-8,578.92

Finding the Fourth Proportional to 20,272.08, 30,398.40 and 8,578.92

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Solution

The fourth proportional to 20,272.08, 30,398.40 and 8,578.92 is: 12,864.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.08 : 30,398.40 = 8,578.92 : x
  2. Step 2: Convert to fraction form
    20,272.08/30,398.40 = 8,578.92/x
  3. Step 3: Cross multiply
    20,272.08x = 30,398.40 × 8,578.92
  4. Step 4: Simplify right side
    20,272.08x = 260,785,441.73
  5. Step 5: Solve for x
    x = 260,785,441.73/20,272.08
  6. Step 6: Final answer
    x = 12,864.27

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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.