Home / 20,943.88-28,891.02-13,273.12

Finding the Fourth Proportional to 20,943.88, 28,891.02 and 13,273.12

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Solution

The fourth proportional to 20,943.88, 28,891.02 and 13,273.12 is: 18,309.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.88 : 28,891.02 = 13,273.12 : x
  2. Step 2: Convert to fraction form
    20,943.88/28,891.02 = 13,273.12/x
  3. Step 3: Cross multiply
    20,943.88x = 28,891.02 × 13,273.12
  4. Step 4: Simplify right side
    20,943.88x = 383,473,975.38
  5. Step 5: Solve for x
    x = 383,473,975.38/20,943.88
  6. Step 6: Final answer
    x = 18,309.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.