Home / 13,517.92-18,646.95-8,136.61

Finding the Fourth Proportional to 13,517.92, 18,646.95 and 8,136.61

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Solution

The fourth proportional to 13,517.92, 18,646.95 and 8,136.61 is: 11,223.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.92 : 18,646.95 = 8,136.61 : x
  2. Step 2: Convert to fraction form
    13,517.92/18,646.95 = 8,136.61/x
  3. Step 3: Cross multiply
    13,517.92x = 18,646.95 × 8,136.61
  4. Step 4: Simplify right side
    13,517.92x = 151,722,959.84
  5. Step 5: Solve for x
    x = 151,722,959.84/13,517.92
  6. Step 6: Final answer
    x = 11,223.84

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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.