Home / 12,161.13-16,781.88-6,857.07

Finding the Fourth Proportional to 12,161.13, 16,781.88 and 6,857.07

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Solution

The fourth proportional to 12,161.13, 16,781.88 and 6,857.07 is: 9,462.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.13 : 16,781.88 = 6,857.07 : x
  2. Step 2: Convert to fraction form
    12,161.13/16,781.88 = 6,857.07/x
  3. Step 3: Cross multiply
    12,161.13x = 16,781.88 × 6,857.07
  4. Step 4: Simplify right side
    12,161.13x = 115,074,525.89
  5. Step 5: Solve for x
    x = 115,074,525.89/12,161.13
  6. Step 6: Final answer
    x = 9,462.49

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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.