Home / 28,310.44-42,387.74-21,363.88

Finding the Fourth Proportional to 28,310.44, 42,387.74 and 21,363.88

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Solution

The fourth proportional to 28,310.44, 42,387.74 and 21,363.88 is: 31,987.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,310.44 : 42,387.74 = 21,363.88 : x
  2. Step 2: Convert to fraction form
    28,310.44/42,387.74 = 21,363.88/x
  3. Step 3: Cross multiply
    28,310.44x = 42,387.74 × 21,363.88
  4. Step 4: Simplify right side
    28,310.44x = 905,566,590.83
  5. Step 5: Solve for x
    x = 905,566,590.83/28,310.44
  6. Step 6: Final answer
    x = 31,987.02

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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.