Home / 9,709.68-13,398.48-5,517.12

Finding the Fourth Proportional to 9,709.68, 13,398.48 and 5,517.12

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Solution

The fourth proportional to 9,709.68, 13,398.48 and 5,517.12 is: 7,613.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,709.68 : 13,398.48 = 5,517.12 : x
  2. Step 2: Convert to fraction form
    9,709.68/13,398.48 = 5,517.12/x
  3. Step 3: Cross multiply
    9,709.68x = 13,398.48 × 5,517.12
  4. Step 4: Simplify right side
    9,709.68x = 73,921,021.98
  5. Step 5: Solve for x
    x = 73,921,021.98/9,709.68
  6. Step 6: Final answer
    x = 7,613.13

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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.