Home / 15,143.40-22,715.10-11,838.60

Finding the Fourth Proportional to 15,143.40, 22,715.10 and 11,838.60

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Solution

The fourth proportional to 15,143.40, 22,715.10 and 11,838.60 is: 17,757.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.40 : 22,715.10 = 11,838.60 : x
  2. Step 2: Convert to fraction form
    15,143.40/22,715.10 = 11,838.60/x
  3. Step 3: Cross multiply
    15,143.40x = 22,715.10 × 11,838.60
  4. Step 4: Simplify right side
    15,143.40x = 268,914,982.86
  5. Step 5: Solve for x
    x = 268,914,982.86/15,143.40
  6. Step 6: Final answer
    x = 17,757.90

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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.