Home / 12,479.80-18,721.52-4,473.96

Finding the Fourth Proportional to 12,479.80, 18,721.52 and 4,473.96

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Solution

The fourth proportional to 12,479.80, 18,721.52 and 4,473.96 is: 6,711.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.80 : 18,721.52 = 4,473.96 : x
  2. Step 2: Convert to fraction form
    12,479.80/18,721.52 = 4,473.96/x
  3. Step 3: Cross multiply
    12,479.80x = 18,721.52 × 4,473.96
  4. Step 4: Simplify right side
    12,479.80x = 83,759,331.62
  5. Step 5: Solve for x
    x = 83,759,331.62/12,479.80
  6. Step 6: Final answer
    x = 6,711.59

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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.