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Finding the Fourth Proportional to 15,900.58, 21,941.69 and 8,826.44

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Solution

The fourth proportional to 15,900.58, 21,941.69 and 8,826.44 is: 12,179.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,900.58 : 21,941.69 = 8,826.44 : x
  2. Step 2: Convert to fraction form
    15,900.58/21,941.69 = 8,826.44/x
  3. Step 3: Cross multiply
    15,900.58x = 21,941.69 × 8,826.44
  4. Step 4: Simplify right side
    15,900.58x = 193,667,010.28
  5. Step 5: Solve for x
    x = 193,667,010.28/15,900.58
  6. Step 6: Final answer
    x = 12,179.87

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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.