Home / 12,207.78-16,845.57-9,695.97

Finding the Fourth Proportional to 12,207.78, 16,845.57 and 9,695.97

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Solution

The fourth proportional to 12,207.78, 16,845.57 and 9,695.97 is: 13,379.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,207.78 : 16,845.57 = 9,695.97 : x
  2. Step 2: Convert to fraction form
    12,207.78/16,845.57 = 9,695.97/x
  3. Step 3: Cross multiply
    12,207.78x = 16,845.57 × 9,695.97
  4. Step 4: Simplify right side
    12,207.78x = 163,334,141.35
  5. Step 5: Solve for x
    x = 163,334,141.35/12,207.78
  6. Step 6: Final answer
    x = 13,379.51

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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.