Home / 10,963.98-15,131.68-7,190.30

Finding the Fourth Proportional to 10,963.98, 15,131.68 and 7,190.30

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Solution

The fourth proportional to 10,963.98, 15,131.68 and 7,190.30 is: 9,923.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,963.98 : 15,131.68 = 7,190.30 : x
  2. Step 2: Convert to fraction form
    10,963.98/15,131.68 = 7,190.30/x
  3. Step 3: Cross multiply
    10,963.98x = 15,131.68 × 7,190.30
  4. Step 4: Simplify right side
    10,963.98x = 108,801,318.70
  5. Step 5: Solve for x
    x = 108,801,318.70/10,963.98
  6. Step 6: Final answer
    x = 9,923.52

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1.5x scale

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.