Home / 10,643.80-15,972.94-3,718.28

Finding the Fourth Proportional to 10,643.80, 15,972.94 and 3,718.28

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Solution

The fourth proportional to 10,643.80, 15,972.94 and 3,718.28 is: 5,579.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,643.80 : 15,972.94 = 3,718.28 : x
  2. Step 2: Convert to fraction form
    10,643.80/15,972.94 = 3,718.28/x
  3. Step 3: Cross multiply
    10,643.80x = 15,972.94 × 3,718.28
  4. Step 4: Simplify right side
    10,643.80x = 59,391,863.34
  5. Step 5: Solve for x
    x = 59,391,863.34/10,643.80
  6. Step 6: Final answer
    x = 5,579.95

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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.