Home / 9,540.80-13,167.20-5,561.60

Finding the Fourth Proportional to 9,540.80, 13,167.20 and 5,561.60

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Solution

The fourth proportional to 9,540.80, 13,167.20 and 5,561.60 is: 7,675.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,540.80 : 13,167.20 = 5,561.60 : x
  2. Step 2: Convert to fraction form
    9,540.80/13,167.20 = 5,561.60/x
  3. Step 3: Cross multiply
    9,540.80x = 13,167.20 × 5,561.60
  4. Step 4: Simplify right side
    9,540.80x = 73,230,699.52
  5. Step 5: Solve for x
    x = 73,230,699.52/9,540.80
  6. Step 6: Final answer
    x = 7,675.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.