Home / 10,185.13-15,277.71-2,789.65

Finding the Fourth Proportional to 10,185.13, 15,277.71 and 2,789.65

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Solution

The fourth proportional to 10,185.13, 15,277.71 and 2,789.65 is: 4,184.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,185.13 : 15,277.71 = 2,789.65 : x
  2. Step 2: Convert to fraction form
    10,185.13/15,277.71 = 2,789.65/x
  3. Step 3: Cross multiply
    10,185.13x = 15,277.71 × 2,789.65
  4. Step 4: Simplify right side
    10,185.13x = 42,619,463.70
  5. Step 5: Solve for x
    x = 42,619,463.70/10,185.13
  6. Step 6: Final answer
    x = 4,184.48

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Similar ratio
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1.5x scale

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.