Home / 12,724.31-19,082.28-4,288.55

Finding the Fourth Proportional to 12,724.31, 19,082.28 and 4,288.55

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Solution

The fourth proportional to 12,724.31, 19,082.28 and 4,288.55 is: 6,431.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,724.31 : 19,082.28 = 4,288.55 : x
  2. Step 2: Convert to fraction form
    12,724.31/19,082.28 = 4,288.55/x
  3. Step 3: Cross multiply
    12,724.31x = 19,082.28 × 4,288.55
  4. Step 4: Simplify right side
    12,724.31x = 81,835,235.28
  5. Step 5: Solve for x
    x = 81,835,235.28/12,724.31
  6. Step 6: Final answer
    x = 6,431.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.