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Finding the Fourth Proportional to 18,168.96, 27,256.50 and 6,479.46

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Solution

The fourth proportional to 18,168.96, 27,256.50 and 6,479.46 is: 9,720.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,168.96 : 27,256.50 = 6,479.46 : x
  2. Step 2: Convert to fraction form
    18,168.96/27,256.50 = 6,479.46/x
  3. Step 3: Cross multiply
    18,168.96x = 27,256.50 × 6,479.46
  4. Step 4: Simplify right side
    18,168.96x = 176,607,401.49
  5. Step 5: Solve for x
    x = 176,607,401.49/18,168.96
  6. Step 6: Final answer
    x = 9,720.28

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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.