Home / 31,806.54-47,690.91-12,086.55

Finding the Fourth Proportional to 31,806.54, 47,690.91 and 12,086.55

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Solution

The fourth proportional to 31,806.54, 47,690.91 and 12,086.55 is: 18,122.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,806.54 : 47,690.91 = 12,086.55 : x
  2. Step 2: Convert to fraction form
    31,806.54/47,690.91 = 12,086.55/x
  3. Step 3: Cross multiply
    31,806.54x = 47,690.91 × 12,086.55
  4. Step 4: Simplify right side
    31,806.54x = 576,418,568.26
  5. Step 5: Solve for x
    x = 576,418,568.26/31,806.54
  6. Step 6: Final answer
    x = 18,122.64

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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.