Home / 11,367.91-15,690.14-7,639.75

Finding the Fourth Proportional to 11,367.91, 15,690.14 and 7,639.75

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Solution

The fourth proportional to 11,367.91, 15,690.14 and 7,639.75 is: 10,544.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,367.91 : 15,690.14 = 7,639.75 : x
  2. Step 2: Convert to fraction form
    11,367.91/15,690.14 = 7,639.75/x
  3. Step 3: Cross multiply
    11,367.91x = 15,690.14 × 7,639.75
  4. Step 4: Simplify right side
    11,367.91x = 119,868,747.07
  5. Step 5: Solve for x
    x = 119,868,747.07/11,367.91
  6. Step 6: Final answer
    x = 10,544.48

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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.