Home / 10,919.97-16,347.69-7,400.79

Finding the Fourth Proportional to 10,919.97, 16,347.69 and 7,400.79

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Solution

The fourth proportional to 10,919.97, 16,347.69 and 7,400.79 is: 11,079.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.97 : 16,347.69 = 7,400.79 : x
  2. Step 2: Convert to fraction form
    10,919.97/16,347.69 = 7,400.79/x
  3. Step 3: Cross multiply
    10,919.97x = 16,347.69 × 7,400.79
  4. Step 4: Simplify right side
    10,919.97x = 120,985,820.68
  5. Step 5: Solve for x
    x = 120,985,820.68/10,919.97
  6. Step 6: Final answer
    x = 11,079.32

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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.