Home / 9,731.92-13,430.70-5,540.20

Finding the Fourth Proportional to 9,731.92, 13,430.70 and 5,540.20

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Solution

The fourth proportional to 9,731.92, 13,430.70 and 5,540.20 is: 7,645.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,731.92 : 13,430.70 = 5,540.20 : x
  2. Step 2: Convert to fraction form
    9,731.92/13,430.70 = 5,540.20/x
  3. Step 3: Cross multiply
    9,731.92x = 13,430.70 × 5,540.20
  4. Step 4: Simplify right side
    9,731.92x = 74,408,764.14
  5. Step 5: Solve for x
    x = 74,408,764.14/9,731.92
  6. Step 6: Final answer
    x = 7,645.85

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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.