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Finding the Fourth Proportional to 38,557.88, 57,836.80 and 10,855.88

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Solution

The fourth proportional to 38,557.88, 57,836.80 and 10,855.88 is: 16,283.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,557.88 : 57,836.80 = 10,855.88 : x
  2. Step 2: Convert to fraction form
    38,557.88/57,836.80 = 10,855.88/x
  3. Step 3: Cross multiply
    38,557.88x = 57,836.80 × 10,855.88
  4. Step 4: Simplify right side
    38,557.88x = 627,869,360.38
  5. Step 5: Solve for x
    x = 627,869,360.38/38,557.88
  6. Step 6: Final answer
    x = 16,283.81

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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.