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Finding the Fourth Proportional to 19,396.31, 29,040.25 and 10,479.69

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Solution

The fourth proportional to 19,396.31, 29,040.25 and 10,479.69 is: 15,690.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,396.31 : 29,040.25 = 10,479.69 : x
  2. Step 2: Convert to fraction form
    19,396.31/29,040.25 = 10,479.69/x
  3. Step 3: Cross multiply
    19,396.31x = 29,040.25 × 10,479.69
  4. Step 4: Simplify right side
    19,396.31x = 304,332,765.12
  5. Step 5: Solve for x
    x = 304,332,765.12/19,396.31
  6. Step 6: Final answer
    x = 15,690.24

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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.