Home / 28,189.29-42,286.73-10,424.61

Finding the Fourth Proportional to 28,189.29, 42,286.73 and 10,424.61

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Solution

The fourth proportional to 28,189.29, 42,286.73 and 10,424.61 is: 15,637.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,189.29 : 42,286.73 = 10,424.61 : x
  2. Step 2: Convert to fraction form
    28,189.29/42,286.73 = 10,424.61/x
  3. Step 3: Cross multiply
    28,189.29x = 42,286.73 × 10,424.61
  4. Step 4: Simplify right side
    28,189.29x = 440,822,668.43
  5. Step 5: Solve for x
    x = 440,822,668.43/28,189.29
  6. Step 6: Final answer
    x = 15,637.95

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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.