Home / 31,811.40-47,717.10-17,814.60

Finding the Fourth Proportional to 31,811.40, 47,717.10 and 17,814.60

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Solution

The fourth proportional to 31,811.40, 47,717.10 and 17,814.60 is: 26,721.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,811.40 : 47,717.10 = 17,814.60 : x
  2. Step 2: Convert to fraction form
    31,811.40/47,717.10 = 17,814.60/x
  3. Step 3: Cross multiply
    31,811.40x = 47,717.10 × 17,814.60
  4. Step 4: Simplify right side
    31,811.40x = 850,061,049.66
  5. Step 5: Solve for x
    x = 850,061,049.66/31,811.40
  6. Step 6: Final answer
    x = 26,721.90

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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.