Home / 11,447.36-15,781.85-9,786.61

Finding the Fourth Proportional to 11,447.36, 15,781.85 and 9,786.61

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Solution

The fourth proportional to 11,447.36, 15,781.85 and 9,786.61 is: 13,492.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,447.36 : 15,781.85 = 9,786.61 : x
  2. Step 2: Convert to fraction form
    11,447.36/15,781.85 = 9,786.61/x
  3. Step 3: Cross multiply
    11,447.36x = 15,781.85 × 9,786.61
  4. Step 4: Simplify right side
    11,447.36x = 154,450,873.57
  5. Step 5: Solve for x
    x = 154,450,873.57/11,447.36
  6. Step 6: Final answer
    x = 13,492.26

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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.