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Finding the Fourth Proportional to 15,938.06, 21,993.60 and 8,863.06

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Solution

The fourth proportional to 15,938.06, 21,993.60 and 8,863.06 is: 12,230.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,938.06 : 21,993.60 = 8,863.06 : x
  2. Step 2: Convert to fraction form
    15,938.06/21,993.60 = 8,863.06/x
  3. Step 3: Cross multiply
    15,938.06x = 21,993.60 × 8,863.06
  4. Step 4: Simplify right side
    15,938.06x = 194,930,596.42
  5. Step 5: Solve for x
    x = 194,930,596.42/15,938.06
  6. Step 6: Final answer
    x = 12,230.51

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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.