Home / 11,919.12-16,390.06-10,344.48

Finding the Fourth Proportional to 11,919.12, 16,390.06 and 10,344.48

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Solution

The fourth proportional to 11,919.12, 16,390.06 and 10,344.48 is: 14,224.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.12 : 16,390.06 = 10,344.48 : x
  2. Step 2: Convert to fraction form
    11,919.12/16,390.06 = 10,344.48/x
  3. Step 3: Cross multiply
    11,919.12x = 16,390.06 × 10,344.48
  4. Step 4: Simplify right side
    11,919.12x = 169,546,647.87
  5. Step 5: Solve for x
    x = 169,546,647.87/11,919.12
  6. Step 6: Final answer
    x = 14,224.76

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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.