Home / 20,305.44-28,013.02-15,821.41

Finding the Fourth Proportional to 20,305.44, 28,013.02 and 15,821.41

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Solution

The fourth proportional to 20,305.44, 28,013.02 and 15,821.41 is: 21,826.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.44 : 28,013.02 = 15,821.41 : x
  2. Step 2: Convert to fraction form
    20,305.44/28,013.02 = 15,821.41/x
  3. Step 3: Cross multiply
    20,305.44x = 28,013.02 × 15,821.41
  4. Step 4: Simplify right side
    20,305.44x = 443,205,534.09
  5. Step 5: Solve for x
    x = 443,205,534.09/20,305.44
  6. Step 6: Final answer
    x = 21,826.93

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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.