Home / 10,894.08-16,315.20-7,991.04

Finding the Fourth Proportional to 10,894.08, 16,315.20 and 7,991.04

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Solution

The fourth proportional to 10,894.08, 16,315.20 and 7,991.04 is: 11,967.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,894.08 : 16,315.20 = 7,991.04 : x
  2. Step 2: Convert to fraction form
    10,894.08/16,315.20 = 7,991.04/x
  3. Step 3: Cross multiply
    10,894.08x = 16,315.20 × 7,991.04
  4. Step 4: Simplify right side
    10,894.08x = 130,375,415.81
  5. Step 5: Solve for x
    x = 130,375,415.81/10,894.08
  6. Step 6: Final answer
    x = 11,967.55

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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.