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Finding the Fourth Proportional to 38,065.56, 57,080.80 and 15,865.68

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Solution

The fourth proportional to 38,065.56, 57,080.80 and 15,865.68 is: 23,791.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,065.56 : 57,080.80 = 15,865.68 : x
  2. Step 2: Convert to fraction form
    38,065.56/57,080.80 = 15,865.68/x
  3. Step 3: Cross multiply
    38,065.56x = 57,080.80 × 15,865.68
  4. Step 4: Simplify right side
    38,065.56x = 905,625,706.94
  5. Step 5: Solve for x
    x = 905,625,706.94/38,065.56
  6. Step 6: Final answer
    x = 23,791.21

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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.