Home / 9,912.48-13,677.92-5,720.96

Finding the Fourth Proportional to 9,912.48, 13,677.92 and 5,720.96

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Solution

The fourth proportional to 9,912.48, 13,677.92 and 5,720.96 is: 7,894.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.48 : 13,677.92 = 5,720.96 : x
  2. Step 2: Convert to fraction form
    9,912.48/13,677.92 = 5,720.96/x
  3. Step 3: Cross multiply
    9,912.48x = 13,677.92 × 5,720.96
  4. Step 4: Simplify right side
    9,912.48x = 78,250,833.20
  5. Step 5: Solve for x
    x = 78,250,833.20/9,912.48
  6. Step 6: Final answer
    x = 7,894.17

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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.