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Finding the Fourth Proportional to 12,354.88, 18,534.13 and 3,588.66

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Solution

The fourth proportional to 12,354.88, 18,534.13 and 3,588.66 is: 5,383.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,354.88 : 18,534.13 = 3,588.66 : x
  2. Step 2: Convert to fraction form
    12,354.88/18,534.13 = 3,588.66/x
  3. Step 3: Cross multiply
    12,354.88x = 18,534.13 × 3,588.66
  4. Step 4: Simplify right side
    12,354.88x = 66,512,589.32
  5. Step 5: Solve for x
    x = 66,512,589.32/12,354.88
  6. Step 6: Final answer
    x = 5,383.51

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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.