Home / 31,719.72-47,580-15,081.42

Finding the Fourth Proportional to 31,719.72, 47,580 and 15,081.42

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Solution

The fourth proportional to 31,719.72, 47,580 and 15,081.42 is: 22,622.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,719.72 : 47,580 = 15,081.42 : x
  2. Step 2: Convert to fraction form
    31,719.72/47,580 = 15,081.42/x
  3. Step 3: Cross multiply
    31,719.72x = 47,580 × 15,081.42
  4. Step 4: Simplify right side
    31,719.72x = 717,573,963.60
  5. Step 5: Solve for x
    x = 717,573,963.60/31,719.72
  6. Step 6: Final answer
    x = 22,622.33

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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.