Home / 13,240.38-18,280.29-8,209.95

Finding the Fourth Proportional to 13,240.38, 18,280.29 and 8,209.95

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Solution

The fourth proportional to 13,240.38, 18,280.29 and 8,209.95 is: 11,335.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.38 : 18,280.29 = 8,209.95 : x
  2. Step 2: Convert to fraction form
    13,240.38/18,280.29 = 8,209.95/x
  3. Step 3: Cross multiply
    13,240.38x = 18,280.29 × 8,209.95
  4. Step 4: Simplify right side
    13,240.38x = 150,080,266.89
  5. Step 5: Solve for x
    x = 150,080,266.89/13,240.38
  6. Step 6: Final answer
    x = 11,335.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.