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Finding the Fourth Proportional to 15,900.33, 21,941.34 and 8,826.20

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Solution

The fourth proportional to 15,900.33, 21,941.34 and 8,826.20 is: 12,179.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,900.33 : 21,941.34 = 8,826.20 : x
  2. Step 2: Convert to fraction form
    15,900.33/21,941.34 = 8,826.20/x
  3. Step 3: Cross multiply
    15,900.33x = 21,941.34 × 8,826.20
  4. Step 4: Simplify right side
    15,900.33x = 193,658,545.40
  5. Step 5: Solve for x
    x = 193,658,545.40/15,900.33
  6. Step 6: Final answer
    x = 12,179.53

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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.