Home / 28,680.44-42,964.65-18,789.68

Finding the Fourth Proportional to 28,680.44, 42,964.65 and 18,789.68

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Solution

The fourth proportional to 28,680.44, 42,964.65 and 18,789.68 is: 28,147.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,680.44 : 42,964.65 = 18,789.68 : x
  2. Step 2: Convert to fraction form
    28,680.44/42,964.65 = 18,789.68/x
  3. Step 3: Cross multiply
    28,680.44x = 42,964.65 × 18,789.68
  4. Step 4: Simplify right side
    28,680.44x = 807,292,024.81
  5. Step 5: Solve for x
    x = 807,292,024.81/28,680.44
  6. Step 6: Final answer
    x = 28,147.83

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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.