Home / 12,799.40-17,659.49-8,329.71

Finding the Fourth Proportional to 12,799.40, 17,659.49 and 8,329.71

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Solution

The fourth proportional to 12,799.40, 17,659.49 and 8,329.71 is: 11,492.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,799.40 : 17,659.49 = 8,329.71 : x
  2. Step 2: Convert to fraction form
    12,799.40/17,659.49 = 8,329.71/x
  3. Step 3: Cross multiply
    12,799.40x = 17,659.49 × 8,329.71
  4. Step 4: Simplify right side
    12,799.40x = 147,098,388.80
  5. Step 5: Solve for x
    x = 147,098,388.80/12,799.40
  6. Step 6: Final answer
    x = 11,492.60

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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.