Home / 11,540.80-17,319.30-7,390.90

Finding the Fourth Proportional to 11,540.80, 17,319.30 and 7,390.90

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Solution

The fourth proportional to 11,540.80, 17,319.30 and 7,390.90 is: 11,091.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,540.80 : 17,319.30 = 7,390.90 : x
  2. Step 2: Convert to fraction form
    11,540.80/17,319.30 = 7,390.90/x
  3. Step 3: Cross multiply
    11,540.80x = 17,319.30 × 7,390.90
  4. Step 4: Simplify right side
    11,540.80x = 128,005,214.37
  5. Step 5: Solve for x
    x = 128,005,214.37/11,540.80
  6. Step 6: Final answer
    x = 11,091.54

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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.