Home / 12,320.80-18,452.40-9,383.20

Finding the Fourth Proportional to 12,320.80, 18,452.40 and 9,383.20

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Solution

The fourth proportional to 12,320.80, 18,452.40 and 9,383.20 is: 14,052.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.80 : 18,452.40 = 9,383.20 : x
  2. Step 2: Convert to fraction form
    12,320.80/18,452.40 = 9,383.20/x
  3. Step 3: Cross multiply
    12,320.80x = 18,452.40 × 9,383.20
  4. Step 4: Simplify right side
    12,320.80x = 173,142,559.68
  5. Step 5: Solve for x
    x = 173,142,559.68/12,320.80
  6. Step 6: Final answer
    x = 14,052.87

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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.