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Finding the Fourth Proportional to 21,667.25, 32,500.88 and 5,251.25

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Solution

The fourth proportional to 21,667.25, 32,500.88 and 5,251.25 is: 7,876.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,667.25 : 32,500.88 = 5,251.25 : x
  2. Step 2: Convert to fraction form
    21,667.25/32,500.88 = 5,251.25/x
  3. Step 3: Cross multiply
    21,667.25x = 32,500.88 × 5,251.25
  4. Step 4: Simplify right side
    21,667.25x = 170,670,219.84
  5. Step 5: Solve for x
    x = 170,670,219.84/21,667.25
  6. Step 6: Final answer
    x = 7,876.88

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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.