Home / 11,919.90-16,449.86-6,542.72

Finding the Fourth Proportional to 11,919.90, 16,449.86 and 6,542.72

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Solution

The fourth proportional to 11,919.90, 16,449.86 and 6,542.72 is: 9,029.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.90 : 16,449.86 = 6,542.72 : x
  2. Step 2: Convert to fraction form
    11,919.90/16,449.86 = 6,542.72/x
  3. Step 3: Cross multiply
    11,919.90x = 16,449.86 × 6,542.72
  4. Step 4: Simplify right side
    11,919.90x = 107,626,713.06
  5. Step 5: Solve for x
    x = 107,626,713.06/11,919.90
  6. Step 6: Final answer
    x = 9,029.16

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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.