Home / 31,679.12-47,424-19,161.26

Finding the Fourth Proportional to 31,679.12, 47,424 and 19,161.26

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Solution

The fourth proportional to 31,679.12, 47,424 and 19,161.26 is: 28,684.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,679.12 : 47,424 = 19,161.26 : x
  2. Step 2: Convert to fraction form
    31,679.12/47,424 = 19,161.26/x
  3. Step 3: Cross multiply
    31,679.12x = 47,424 × 19,161.26
  4. Step 4: Simplify right side
    31,679.12x = 908,703,594.24
  5. Step 5: Solve for x
    x = 908,703,594.24/31,679.12
  6. Step 6: Final answer
    x = 28,684.62

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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.