Home / 28,426.66-39,229.86-15,853.84

Finding the Fourth Proportional to 28,426.66, 39,229.86 and 15,853.84

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Solution

The fourth proportional to 28,426.66, 39,229.86 and 15,853.84 is: 21,878.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,426.66 : 39,229.86 = 15,853.84 : x
  2. Step 2: Convert to fraction form
    28,426.66/39,229.86 = 15,853.84/x
  3. Step 3: Cross multiply
    28,426.66x = 39,229.86 × 15,853.84
  4. Step 4: Simplify right side
    28,426.66x = 621,943,923.66
  5. Step 5: Solve for x
    x = 621,943,923.66/28,426.66
  6. Step 6: Final answer
    x = 21,878.90

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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.