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Finding the Fourth Proportional to 21,405.28, 32,101.28 and 7,551.04

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Solution

The fourth proportional to 21,405.28, 32,101.28 and 7,551.04 is: 11,324.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405.28 : 32,101.28 = 7,551.04 : x
  2. Step 2: Convert to fraction form
    21,405.28/32,101.28 = 7,551.04/x
  3. Step 3: Cross multiply
    21,405.28x = 32,101.28 × 7,551.04
  4. Step 4: Simplify right side
    21,405.28x = 242,398,049.33
  5. Step 5: Solve for x
    x = 242,398,049.33/21,405.28
  6. Step 6: Final answer
    x = 11,324.22

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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.