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Finding the Fourth Proportional to 18,440.40, 27,660.60 and 15,200.40

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Solution

The fourth proportional to 18,440.40, 27,660.60 and 15,200.40 is: 22,800.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,440.40 : 27,660.60 = 15,200.40 : x
  2. Step 2: Convert to fraction form
    18,440.40/27,660.60 = 15,200.40/x
  3. Step 3: Cross multiply
    18,440.40x = 27,660.60 × 15,200.40
  4. Step 4: Simplify right side
    18,440.40x = 420,452,184.24
  5. Step 5: Solve for x
    x = 420,452,184.24/18,440.40
  6. Step 6: Final answer
    x = 22,800.60

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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.