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Finding the Fourth Proportional to 21,954.32, 32,928.02 and 7,163.16

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Solution

The fourth proportional to 21,954.32, 32,928.02 and 7,163.16 is: 10,743.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,954.32 : 32,928.02 = 7,163.16 : x
  2. Step 2: Convert to fraction form
    21,954.32/32,928.02 = 7,163.16/x
  3. Step 3: Cross multiply
    21,954.32x = 32,928.02 × 7,163.16
  4. Step 4: Simplify right side
    21,954.32x = 235,868,675.74
  5. Step 5: Solve for x
    x = 235,868,675.74/21,954.32
  6. Step 6: Final answer
    x = 10,743.61

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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.