Home / 11,177.20-15,422.40-7,197.52

Finding the Fourth Proportional to 11,177.20, 15,422.40 and 7,197.52

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Solution

The fourth proportional to 11,177.20, 15,422.40 and 7,197.52 is: 9,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,177.20 : 15,422.40 = 7,197.52 : x
  2. Step 2: Convert to fraction form
    11,177.20/15,422.40 = 7,197.52/x
  3. Step 3: Cross multiply
    11,177.20x = 15,422.40 × 7,197.52
  4. Step 4: Simplify right side
    11,177.20x = 111,003,032.45
  5. Step 5: Solve for x
    x = 111,003,032.45/11,177.20
  6. Step 6: Final answer
    x = 9,931.20

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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.