Home / 31,918.74-47,881.38-12,213.87

Finding the Fourth Proportional to 31,918.74, 47,881.38 and 12,213.87

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Solution

The fourth proportional to 31,918.74, 47,881.38 and 12,213.87 is: 18,322.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,918.74 : 47,881.38 = 12,213.87 : x
  2. Step 2: Convert to fraction form
    31,918.74/47,881.38 = 12,213.87/x
  3. Step 3: Cross multiply
    31,918.74x = 47,881.38 × 12,213.87
  4. Step 4: Simplify right side
    31,918.74x = 584,816,950.74
  5. Step 5: Solve for x
    x = 584,816,950.74/31,918.74
  6. Step 6: Final answer
    x = 18,322.06

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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.