Home / 31,982.23-47,980.28-12,260.81

Finding the Fourth Proportional to 31,982.23, 47,980.28 and 12,260.81

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Solution

The fourth proportional to 31,982.23, 47,980.28 and 12,260.81 is: 18,393.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,982.23 : 47,980.28 = 12,260.81 : x
  2. Step 2: Convert to fraction form
    31,982.23/47,980.28 = 12,260.81/x
  3. Step 3: Cross multiply
    31,982.23x = 47,980.28 × 12,260.81
  4. Step 4: Simplify right side
    31,982.23x = 588,277,096.83
  5. Step 5: Solve for x
    x = 588,277,096.83/31,982.23
  6. Step 6: Final answer
    x = 18,393.87

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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.