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Finding the Fourth Proportional to 18,655.17, 27,973.25 and 9,168.12

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Solution

The fourth proportional to 18,655.17, 27,973.25 and 9,168.12 is: 13,747.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.17 : 27,973.25 = 9,168.12 : x
  2. Step 2: Convert to fraction form
    18,655.17/27,973.25 = 9,168.12/x
  3. Step 3: Cross multiply
    18,655.17x = 27,973.25 × 9,168.12
  4. Step 4: Simplify right side
    18,655.17x = 256,462,112.79
  5. Step 5: Solve for x
    x = 256,462,112.79/18,655.17
  6. Step 6: Final answer
    x = 13,747.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.