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Finding the Fourth Proportional to 28,253.64, 42,380.71 and 7,193.71

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Solution

The fourth proportional to 28,253.64, 42,380.71 and 7,193.71 is: 10,790.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,253.64 : 42,380.71 = 7,193.71 : x
  2. Step 2: Convert to fraction form
    28,253.64/42,380.71 = 7,193.71/x
  3. Step 3: Cross multiply
    28,253.64x = 42,380.71 × 7,193.71
  4. Step 4: Simplify right side
    28,253.64x = 304,874,537.33
  5. Step 5: Solve for x
    x = 304,874,537.33/28,253.64
  6. Step 6: Final answer
    x = 10,790.63

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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.