Home / 31,879.47-47,812.38-13,154.65

Finding the Fourth Proportional to 31,879.47, 47,812.38 and 13,154.65

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Solution

The fourth proportional to 31,879.47, 47,812.38 and 13,154.65 is: 19,729.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,879.47 : 47,812.38 = 13,154.65 : x
  2. Step 2: Convert to fraction form
    31,879.47/47,812.38 = 13,154.65/x
  3. Step 3: Cross multiply
    31,879.47x = 47,812.38 × 13,154.65
  4. Step 4: Simplify right side
    31,879.47x = 628,955,224.65
  5. Step 5: Solve for x
    x = 628,955,224.65/31,879.47
  6. Step 6: Final answer
    x = 19,729.16

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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.