Home / 28,309.25-42,470.42-8,319.04

Finding the Fourth Proportional to 28,309.25, 42,470.42 and 8,319.04

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Solution

The fourth proportional to 28,309.25, 42,470.42 and 8,319.04 is: 12,480.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,309.25 : 42,470.42 = 8,319.04 : x
  2. Step 2: Convert to fraction form
    28,309.25/42,470.42 = 8,319.04/x
  3. Step 3: Cross multiply
    28,309.25x = 42,470.42 × 8,319.04
  4. Step 4: Simplify right side
    28,309.25x = 353,313,196.68
  5. Step 5: Solve for x
    x = 353,313,196.68/28,309.25
  6. Step 6: Final answer
    x = 12,480.49

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Half scale
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Double scale
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Similar ratio
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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.