Home / 31,781.92-47,663.73-12,806.50

Finding the Fourth Proportional to 31,781.92, 47,663.73 and 12,806.50

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Solution

The fourth proportional to 31,781.92, 47,663.73 and 12,806.50 is: 19,206.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,781.92 : 47,663.73 = 12,806.50 : x
  2. Step 2: Convert to fraction form
    31,781.92/47,663.73 = 12,806.50/x
  3. Step 3: Cross multiply
    31,781.92x = 47,663.73 × 12,806.50
  4. Step 4: Simplify right side
    31,781.92x = 610,405,558.25
  5. Step 5: Solve for x
    x = 610,405,558.25/31,781.92
  6. Step 6: Final answer
    x = 19,206.06

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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.