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Finding the Fourth Proportional to 21,627.56, 32,441.28 and 5,211.56

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Solution

The fourth proportional to 21,627.56, 32,441.28 and 5,211.56 is: 7,817.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,627.56 : 32,441.28 = 5,211.56 : x
  2. Step 2: Convert to fraction form
    21,627.56/32,441.28 = 5,211.56/x
  3. Step 3: Cross multiply
    21,627.56x = 32,441.28 × 5,211.56
  4. Step 4: Simplify right side
    21,627.56x = 169,069,677.20
  5. Step 5: Solve for x
    x = 169,069,677.20/21,627.56
  6. Step 6: Final answer
    x = 7,817.33

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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.