Home / 28,177.20-42,258.60-11,532.72

Finding the Fourth Proportional to 28,177.20, 42,258.60 and 11,532.72

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Solution

The fourth proportional to 28,177.20, 42,258.60 and 11,532.72 is: 17,296.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,177.20 : 42,258.60 = 11,532.72 : x
  2. Step 2: Convert to fraction form
    28,177.20/42,258.60 = 11,532.72/x
  3. Step 3: Cross multiply
    28,177.20x = 42,258.60 × 11,532.72
  4. Step 4: Simplify right side
    28,177.20x = 487,356,601.39
  5. Step 5: Solve for x
    x = 487,356,601.39/28,177.20
  6. Step 6: Final answer
    x = 17,296.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.