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Finding the Fourth Proportional to 18,209.34, 27,317.13 and 8,349.47

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Solution

The fourth proportional to 18,209.34, 27,317.13 and 8,349.47 is: 12,525.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,209.34 : 27,317.13 = 8,349.47 : x
  2. Step 2: Convert to fraction form
    18,209.34/27,317.13 = 8,349.47/x
  3. Step 3: Cross multiply
    18,209.34x = 27,317.13 × 8,349.47
  4. Step 4: Simplify right side
    18,209.34x = 228,083,420.84
  5. Step 5: Solve for x
    x = 228,083,420.84/18,209.34
  6. Step 6: Final answer
    x = 12,525.63

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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.