Home / 11,082.34-15,299.28-8,558.78

Finding the Fourth Proportional to 11,082.34, 15,299.28 and 8,558.78

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Solution

The fourth proportional to 11,082.34, 15,299.28 and 8,558.78 is: 11,815.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,082.34 : 15,299.28 = 8,558.78 : x
  2. Step 2: Convert to fraction form
    11,082.34/15,299.28 = 8,558.78/x
  3. Step 3: Cross multiply
    11,082.34x = 15,299.28 × 8,558.78
  4. Step 4: Simplify right side
    11,082.34x = 130,943,209.93
  5. Step 5: Solve for x
    x = 130,943,209.93/11,082.34
  6. Step 6: Final answer
    x = 11,815.49

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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.