Home / 15,453.68-21,329.11-10,082.78

Finding the Fourth Proportional to 15,453.68, 21,329.11 and 10,082.78

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Solution

The fourth proportional to 15,453.68, 21,329.11 and 10,082.78 is: 13,916.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.68 : 21,329.11 = 10,082.78 : x
  2. Step 2: Convert to fraction form
    15,453.68/21,329.11 = 10,082.78/x
  3. Step 3: Cross multiply
    15,453.68x = 21,329.11 × 10,082.78
  4. Step 4: Simplify right side
    15,453.68x = 215,056,566.67
  5. Step 5: Solve for x
    x = 215,056,566.67/15,453.68
  6. Step 6: Final answer
    x = 13,916.20

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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.