Home / 12,248.40-18,339.32-8,542.80

Finding the Fourth Proportional to 12,248.40, 18,339.32 and 8,542.80

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Solution

The fourth proportional to 12,248.40, 18,339.32 and 8,542.80 is: 12,790.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,248.40 : 18,339.32 = 8,542.80 : x
  2. Step 2: Convert to fraction form
    12,248.40/18,339.32 = 8,542.80/x
  3. Step 3: Cross multiply
    12,248.40x = 18,339.32 × 8,542.80
  4. Step 4: Simplify right side
    12,248.40x = 156,669,142.90
  5. Step 5: Solve for x
    x = 156,669,142.90/12,248.40
  6. Step 6: Final answer
    x = 12,790.99

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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.