Home / 15,869.28-21,899.16-8,795.56

Finding the Fourth Proportional to 15,869.28, 21,899.16 and 8,795.56

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Solution

The fourth proportional to 15,869.28, 21,899.16 and 8,795.56 is: 12,137.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.28 : 21,899.16 = 8,795.56 : x
  2. Step 2: Convert to fraction form
    15,869.28/21,899.16 = 8,795.56/x
  3. Step 3: Cross multiply
    15,869.28x = 21,899.16 × 8,795.56
  4. Step 4: Simplify right side
    15,869.28x = 192,615,375.73
  5. Step 5: Solve for x
    x = 192,615,375.73/15,869.28
  6. Step 6: Final answer
    x = 12,137.63

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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.