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Finding the Fourth Proportional to 28,227.72, 42,361.02 and 9,759.72

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Solution

The fourth proportional to 28,227.72, 42,361.02 and 9,759.72 is: 14,646.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,227.72 : 42,361.02 = 9,759.72 : x
  2. Step 2: Convert to fraction form
    28,227.72/42,361.02 = 9,759.72/x
  3. Step 3: Cross multiply
    28,227.72x = 42,361.02 × 9,759.72
  4. Step 4: Simplify right side
    28,227.72x = 413,431,694.11
  5. Step 5: Solve for x
    x = 413,431,694.11/28,227.72
  6. Step 6: Final answer
    x = 14,646.30

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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.