Home / 28,851.18-43,162.92-21,851.42

Finding the Fourth Proportional to 28,851.18, 43,162.92 and 21,851.42

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Solution

The fourth proportional to 28,851.18, 43,162.92 and 21,851.42 is: 32,690.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,851.18 : 43,162.92 = 21,851.42 : x
  2. Step 2: Convert to fraction form
    28,851.18/43,162.92 = 21,851.42/x
  3. Step 3: Cross multiply
    28,851.18x = 43,162.92 × 21,851.42
  4. Step 4: Simplify right side
    28,851.18x = 943,171,093.35
  5. Step 5: Solve for x
    x = 943,171,093.35/28,851.18
  6. Step 6: Final answer
    x = 32,690.90

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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.