Home / 15,350.28-21,181.89-8,635.76

Finding the Fourth Proportional to 15,350.28, 21,181.89 and 8,635.76

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Solution

The fourth proportional to 15,350.28, 21,181.89 and 8,635.76 is: 11,916.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,350.28 : 21,181.89 = 8,635.76 : x
  2. Step 2: Convert to fraction form
    15,350.28/21,181.89 = 8,635.76/x
  3. Step 3: Cross multiply
    15,350.28x = 21,181.89 × 8,635.76
  4. Step 4: Simplify right side
    15,350.28x = 182,921,794.87
  5. Step 5: Solve for x
    x = 182,921,794.87/15,350.28
  6. Step 6: Final answer
    x = 11,916.51

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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.