Home / 11,247.68-15,516.56-7,212.08

Finding the Fourth Proportional to 11,247.68, 15,516.56 and 7,212.08

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Solution

The fourth proportional to 11,247.68, 15,516.56 and 7,212.08 is: 9,949.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,247.68 : 15,516.56 = 7,212.08 : x
  2. Step 2: Convert to fraction form
    11,247.68/15,516.56 = 7,212.08/x
  3. Step 3: Cross multiply
    11,247.68x = 15,516.56 × 7,212.08
  4. Step 4: Simplify right side
    11,247.68x = 111,906,672.04
  5. Step 5: Solve for x
    x = 111,906,672.04/11,247.68
  6. Step 6: Final answer
    x = 9,949.31

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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.