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Finding the Fourth Proportional to 15,844.56, 21,863.24 and 8,770.88

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Solution

The fourth proportional to 15,844.56, 21,863.24 and 8,770.88 is: 12,102.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,844.56 : 21,863.24 = 8,770.88 : x
  2. Step 2: Convert to fraction form
    15,844.56/21,863.24 = 8,770.88/x
  3. Step 3: Cross multiply
    15,844.56x = 21,863.24 × 8,770.88
  4. Step 4: Simplify right side
    15,844.56x = 191,759,854.45
  5. Step 5: Solve for x
    x = 191,759,854.45/15,844.56
  6. Step 6: Final answer
    x = 12,102.57

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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.