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Finding the Fourth Proportional to 38,482.40, 57,731.40 and 21,850.40

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Solution

The fourth proportional to 38,482.40, 57,731.40 and 21,850.40 is: 32,780.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,482.40 : 57,731.40 = 21,850.40 : x
  2. Step 2: Convert to fraction form
    38,482.40/57,731.40 = 21,850.40/x
  3. Step 3: Cross multiply
    38,482.40x = 57,731.40 × 21,850.40
  4. Step 4: Simplify right side
    38,482.40x = 1,261,454,182.56
  5. Step 5: Solve for x
    x = 1,261,454,182.56/38,482.40
  6. Step 6: Final answer
    x = 32,780.03

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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.