Home / 12,209.38-18,295.12-8,468.46

Finding the Fourth Proportional to 12,209.38, 18,295.12 and 8,468.46

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Solution

The fourth proportional to 12,209.38, 18,295.12 and 8,468.46 is: 12,689.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.38 : 18,295.12 = 8,468.46 : x
  2. Step 2: Convert to fraction form
    12,209.38/18,295.12 = 8,468.46/x
  3. Step 3: Cross multiply
    12,209.38x = 18,295.12 × 8,468.46
  4. Step 4: Simplify right side
    12,209.38x = 154,931,491.92
  5. Step 5: Solve for x
    x = 154,931,491.92/12,209.38
  6. Step 6: Final answer
    x = 12,689.55

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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.