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Finding the Fourth Proportional to 12,657.96, 17,448.12 and 8,672.22

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Solution

The fourth proportional to 12,657.96, 17,448.12 and 8,672.22 is: 11,954.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.96 : 17,448.12 = 8,672.22 : x
  2. Step 2: Convert to fraction form
    12,657.96/17,448.12 = 8,672.22/x
  3. Step 3: Cross multiply
    12,657.96x = 17,448.12 × 8,672.22
  4. Step 4: Simplify right side
    12,657.96x = 151,313,935.23
  5. Step 5: Solve for x
    x = 151,313,935.23/12,657.96
  6. Step 6: Final answer
    x = 11,954.05

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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.