Home / 15,806.75-21,815.60-9,433.61

Finding the Fourth Proportional to 15,806.75, 21,815.60 and 9,433.61

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Solution

The fourth proportional to 15,806.75, 21,815.60 and 9,433.61 is: 13,019.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,806.75 : 21,815.60 = 9,433.61 : x
  2. Step 2: Convert to fraction form
    15,806.75/21,815.60 = 9,433.61/x
  3. Step 3: Cross multiply
    15,806.75x = 21,815.60 × 9,433.61
  4. Step 4: Simplify right side
    15,806.75x = 205,799,787.88
  5. Step 5: Solve for x
    x = 205,799,787.88/15,806.75
  6. Step 6: Final answer
    x = 13,019.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.