Home / 38,276.88-57,415.32-11,981.76

Finding the Fourth Proportional to 38,276.88, 57,415.32 and 11,981.76

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Solution

The fourth proportional to 38,276.88, 57,415.32 and 11,981.76 is: 17,972.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,276.88 : 57,415.32 = 11,981.76 : x
  2. Step 2: Convert to fraction form
    38,276.88/57,415.32 = 11,981.76/x
  3. Step 3: Cross multiply
    38,276.88x = 57,415.32 × 11,981.76
  4. Step 4: Simplify right side
    38,276.88x = 687,936,584.56
  5. Step 5: Solve for x
    x = 687,936,584.56/38,276.88
  6. Step 6: Final answer
    x = 17,972.64

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Similar ratio
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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.