Home / 21,226.23-31,839.24-5,431.23

Finding the Fourth Proportional to 21,226.23, 31,839.24 and 5,431.23

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Solution

The fourth proportional to 21,226.23, 31,839.24 and 5,431.23 is: 8,146.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,226.23 : 31,839.24 = 5,431.23 : x
  2. Step 2: Convert to fraction form
    21,226.23/31,839.24 = 5,431.23/x
  3. Step 3: Cross multiply
    21,226.23x = 31,839.24 × 5,431.23
  4. Step 4: Simplify right side
    21,226.23x = 172,926,235.47
  5. Step 5: Solve for x
    x = 172,926,235.47/21,226.23
  6. Step 6: Final answer
    x = 8,146.82

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1.5x scale

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.