Home / 11,919.75-16,449.30-6,615.33

Finding the Fourth Proportional to 11,919.75, 16,449.30 and 6,615.33

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Solution

The fourth proportional to 11,919.75, 16,449.30 and 6,615.33 is: 9,129.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.75 : 16,449.30 = 6,615.33 : x
  2. Step 2: Convert to fraction form
    11,919.75/16,449.30 = 6,615.33/x
  3. Step 3: Cross multiply
    11,919.75x = 16,449.30 × 6,615.33
  4. Step 4: Simplify right side
    11,919.75x = 108,817,547.77
  5. Step 5: Solve for x
    x = 108,817,547.77/11,919.75
  6. Step 6: Final answer
    x = 9,129.18

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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.