Home / 10,919.75-16,366.41-7,752.21

Finding the Fourth Proportional to 10,919.75, 16,366.41 and 7,752.21

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Solution

The fourth proportional to 10,919.75, 16,366.41 and 7,752.21 is: 11,618.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.75 : 16,366.41 = 7,752.21 : x
  2. Step 2: Convert to fraction form
    10,919.75/16,366.41 = 7,752.21/x
  3. Step 3: Cross multiply
    10,919.75x = 16,366.41 × 7,752.21
  4. Step 4: Simplify right side
    10,919.75x = 126,875,847.27
  5. Step 5: Solve for x
    x = 126,875,847.27/10,919.75
  6. Step 6: Final answer
    x = 11,618.93

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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.