Home / 12,212.16-16,851.36-6,906.72

Finding the Fourth Proportional to 12,212.16, 16,851.36 and 6,906.72

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Solution

The fourth proportional to 12,212.16, 16,851.36 and 6,906.72 is: 9,530.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.16 : 16,851.36 = 6,906.72 : x
  2. Step 2: Convert to fraction form
    12,212.16/16,851.36 = 6,906.72/x
  3. Step 3: Cross multiply
    12,212.16x = 16,851.36 × 6,906.72
  4. Step 4: Simplify right side
    12,212.16x = 116,387,625.14
  5. Step 5: Solve for x
    x = 116,387,625.14/12,212.16
  6. Step 6: Final answer
    x = 9,530.47

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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.