Home / 21,243.76-31,865.63-10,116.71

Finding the Fourth Proportional to 21,243.76, 31,865.63 and 10,116.71

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Solution

The fourth proportional to 21,243.76, 31,865.63 and 10,116.71 is: 15,175.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.76 : 31,865.63 = 10,116.71 : x
  2. Step 2: Convert to fraction form
    21,243.76/31,865.63 = 10,116.71/x
  3. Step 3: Cross multiply
    21,243.76x = 31,865.63 × 10,116.71
  4. Step 4: Simplify right side
    21,243.76x = 322,375,247.26
  5. Step 5: Solve for x
    x = 322,375,247.26/21,243.76
  6. Step 6: Final answer
    x = 15,175.06

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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.