Home / 10,919.75-16,379.60-8,718.17

Finding the Fourth Proportional to 10,919.75, 16,379.60 and 8,718.17

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Solution

The fourth proportional to 10,919.75, 16,379.60 and 8,718.17 is: 13,077.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.75 : 16,379.60 = 8,718.17 : x
  2. Step 2: Convert to fraction form
    10,919.75/16,379.60 = 8,718.17/x
  3. Step 3: Cross multiply
    10,919.75x = 16,379.60 × 8,718.17
  4. Step 4: Simplify right side
    10,919.75x = 142,800,077.23
  5. Step 5: Solve for x
    x = 142,800,077.23/10,919.75
  6. Step 6: Final answer
    x = 13,077.24

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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.