Home / 21,222.68-31,825.02-10,116.52

Finding the Fourth Proportional to 21,222.68, 31,825.02 and 10,116.52

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Solution

The fourth proportional to 21,222.68, 31,825.02 and 10,116.52 is: 15,170.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.68 : 31,825.02 = 10,116.52 : x
  2. Step 2: Convert to fraction form
    21,222.68/31,825.02 = 10,116.52/x
  3. Step 3: Cross multiply
    21,222.68x = 31,825.02 × 10,116.52
  4. Step 4: Simplify right side
    21,222.68x = 321,958,451.33
  5. Step 5: Solve for x
    x = 321,958,451.33/21,222.68
  6. Step 6: Final answer
    x = 15,170.49

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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.