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Finding the Fourth Proportional to 15,882.27, 21,916.54 and 8,808.54

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Solution

The fourth proportional to 15,882.27, 21,916.54 and 8,808.54 is: 12,155.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,882.27 : 21,916.54 = 8,808.54 : x
  2. Step 2: Convert to fraction form
    15,882.27/21,916.54 = 8,808.54/x
  3. Step 3: Cross multiply
    15,882.27x = 21,916.54 × 8,808.54
  4. Step 4: Simplify right side
    15,882.27x = 193,052,719.25
  5. Step 5: Solve for x
    x = 193,052,719.25/15,882.27
  6. Step 6: Final answer
    x = 12,155.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.