Home / 9,965.94-14,947.68-4,121.78

Finding the Fourth Proportional to 9,965.94, 14,947.68 and 4,121.78

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Solution

The fourth proportional to 9,965.94, 14,947.68 and 4,121.78 is: 6,182.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,965.94 : 14,947.68 = 4,121.78 : x
  2. Step 2: Convert to fraction form
    9,965.94/14,947.68 = 4,121.78/x
  3. Step 3: Cross multiply
    9,965.94x = 14,947.68 × 4,121.78
  4. Step 4: Simplify right side
    9,965.94x = 61,611,048.47
  5. Step 5: Solve for x
    x = 61,611,048.47/9,965.94
  6. Step 6: Final answer
    x = 6,182.16

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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.