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Finding the Fourth Proportional to 12,354.88, 18,535.36 and 3,589.88

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Solution

The fourth proportional to 12,354.88, 18,535.36 and 3,589.88 is: 5,385.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,354.88 : 18,535.36 = 3,589.88 : x
  2. Step 2: Convert to fraction form
    12,354.88/18,535.36 = 3,589.88/x
  3. Step 3: Cross multiply
    12,354.88x = 18,535.36 × 3,589.88
  4. Step 4: Simplify right side
    12,354.88x = 66,539,718.16
  5. Step 5: Solve for x
    x = 66,539,718.16/12,354.88
  6. Step 6: Final answer
    x = 5,385.70

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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.