Home / 19,468.72-29,146.80-11,439.20

Finding the Fourth Proportional to 19,468.72, 29,146.80 and 11,439.20

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Solution

The fourth proportional to 19,468.72, 29,146.80 and 11,439.20 is: 17,125.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,468.72 : 29,146.80 = 11,439.20 : x
  2. Step 2: Convert to fraction form
    19,468.72/29,146.80 = 11,439.20/x
  3. Step 3: Cross multiply
    19,468.72x = 29,146.80 × 11,439.20
  4. Step 4: Simplify right side
    19,468.72x = 333,416,074.56
  5. Step 5: Solve for x
    x = 333,416,074.56/19,468.72
  6. Step 6: Final answer
    x = 17,125.73

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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.