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Finding the Fourth Proportional to 10,247.80, 15,371.70 and 8,133.70

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Solution

The fourth proportional to 10,247.80, 15,371.70 and 8,133.70 is: 12,200.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,247.80 : 15,371.70 = 8,133.70 : x
  2. Step 2: Convert to fraction form
    10,247.80/15,371.70 = 8,133.70/x
  3. Step 3: Cross multiply
    10,247.80x = 15,371.70 × 8,133.70
  4. Step 4: Simplify right side
    10,247.80x = 125,028,796.29
  5. Step 5: Solve for x
    x = 125,028,796.29/10,247.80
  6. Step 6: Final answer
    x = 12,200.55

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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.