Home / 10,247.20-15,370.80-9,712.60

Finding the Fourth Proportional to 10,247.20, 15,370.80 and 9,712.60

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Solution

The fourth proportional to 10,247.20, 15,370.80 and 9,712.60 is: 14,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,247.20 : 15,370.80 = 9,712.60 : x
  2. Step 2: Convert to fraction form
    10,247.20/15,370.80 = 9,712.60/x
  3. Step 3: Cross multiply
    10,247.20x = 15,370.80 × 9,712.60
  4. Step 4: Simplify right side
    10,247.20x = 149,290,432.08
  5. Step 5: Solve for x
    x = 149,290,432.08/10,247.20
  6. Step 6: Final answer
    x = 14,568.90

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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.