Home / 21,247.44-31,871.16-10,120.41

Finding the Fourth Proportional to 21,247.44, 31,871.16 and 10,120.41

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Solution

The fourth proportional to 21,247.44, 31,871.16 and 10,120.41 is: 15,180.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.44 : 31,871.16 = 10,120.41 : x
  2. Step 2: Convert to fraction form
    21,247.44/31,871.16 = 10,120.41/x
  3. Step 3: Cross multiply
    21,247.44x = 31,871.16 × 10,120.41
  4. Step 4: Simplify right side
    21,247.44x = 322,549,206.38
  5. Step 5: Solve for x
    x = 322,549,206.38/21,247.44
  6. Step 6: Final answer
    x = 15,180.62

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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.