Home / 31,980.19-47,960.56-13,255.83

Finding the Fourth Proportional to 31,980.19, 47,960.56 and 13,255.83

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Solution

The fourth proportional to 31,980.19, 47,960.56 and 13,255.83 is: 19,879.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,980.19 : 47,960.56 = 13,255.83 : x
  2. Step 2: Convert to fraction form
    31,980.19/47,960.56 = 13,255.83/x
  3. Step 3: Cross multiply
    31,980.19x = 47,960.56 × 13,255.83
  4. Step 4: Simplify right side
    31,980.19x = 635,756,837.18
  5. Step 5: Solve for x
    x = 635,756,837.18/31,980.19
  6. Step 6: Final answer
    x = 19,879.71

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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.