Home / 10,166.40-15,249.60-8,319.60

Finding the Fourth Proportional to 10,166.40, 15,249.60 and 8,319.60

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Solution

The fourth proportional to 10,166.40, 15,249.60 and 8,319.60 is: 12,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,166.40 : 15,249.60 = 8,319.60 : x
  2. Step 2: Convert to fraction form
    10,166.40/15,249.60 = 8,319.60/x
  3. Step 3: Cross multiply
    10,166.40x = 15,249.60 × 8,319.60
  4. Step 4: Simplify right side
    10,166.40x = 126,870,572.16
  5. Step 5: Solve for x
    x = 126,870,572.16/10,166.40
  6. Step 6: Final answer
    x = 12,479.40

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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.