Home / 31,983.23-47,981.78-12,261.81

Finding the Fourth Proportional to 31,983.23, 47,981.78 and 12,261.81

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Solution

The fourth proportional to 31,983.23, 47,981.78 and 12,261.81 is: 18,395.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,983.23 : 47,981.78 = 12,261.81 : x
  2. Step 2: Convert to fraction form
    31,983.23/47,981.78 = 12,261.81/x
  3. Step 3: Cross multiply
    31,983.23x = 47,981.78 × 12,261.81
  4. Step 4: Simplify right side
    31,983.23x = 588,343,469.82
  5. Step 5: Solve for x
    x = 588,343,469.82/31,983.23
  6. Step 6: Final answer
    x = 18,395.37

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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.