Home / 28,187.29-42,283.73-10,422.61

Finding the Fourth Proportional to 28,187.29, 42,283.73 and 10,422.61

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Solution

The fourth proportional to 28,187.29, 42,283.73 and 10,422.61 is: 15,634.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187.29 : 42,283.73 = 10,422.61 : x
  2. Step 2: Convert to fraction form
    28,187.29/42,283.73 = 10,422.61/x
  3. Step 3: Cross multiply
    28,187.29x = 42,283.73 × 10,422.61
  4. Step 4: Simplify right side
    28,187.29x = 440,706,827.14
  5. Step 5: Solve for x
    x = 440,706,827.14/28,187.29
  6. Step 6: Final answer
    x = 15,634.95

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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.