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Finding the Fourth Proportional to 38,321.47, 57,482.48 and 13,361.46

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Solution

The fourth proportional to 38,321.47, 57,482.48 and 13,361.46 is: 20,042.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,321.47 : 57,482.48 = 13,361.46 : x
  2. Step 2: Convert to fraction form
    38,321.47/57,482.48 = 13,361.46/x
  3. Step 3: Cross multiply
    38,321.47x = 57,482.48 × 13,361.46
  4. Step 4: Simplify right side
    38,321.47x = 768,049,857.22
  5. Step 5: Solve for x
    x = 768,049,857.22/38,321.47
  6. Step 6: Final answer
    x = 20,042.29

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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.