Home / 9,012.40-13,520.88-3,169.60

Finding the Fourth Proportional to 9,012.40, 13,520.88 and 3,169.60

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Solution

The fourth proportional to 9,012.40, 13,520.88 and 3,169.60 is: 4,755.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,012.40 : 13,520.88 = 3,169.60 : x
  2. Step 2: Convert to fraction form
    9,012.40/13,520.88 = 3,169.60/x
  3. Step 3: Cross multiply
    9,012.40x = 13,520.88 × 3,169.60
  4. Step 4: Simplify right side
    9,012.40x = 42,855,781.25
  5. Step 5: Solve for x
    x = 42,855,781.25/9,012.40
  6. Step 6: Final answer
    x = 4,755.20

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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.