Home / 17,643.39-24,339.21-12,855.90

Finding the Fourth Proportional to 17,643.39, 24,339.21 and 12,855.90

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Solution

The fourth proportional to 17,643.39, 24,339.21 and 12,855.90 is: 17,734.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,643.39 : 24,339.21 = 12,855.90 : x
  2. Step 2: Convert to fraction form
    17,643.39/24,339.21 = 12,855.90/x
  3. Step 3: Cross multiply
    17,643.39x = 24,339.21 × 12,855.90
  4. Step 4: Simplify right side
    17,643.39x = 312,902,449.84
  5. Step 5: Solve for x
    x = 312,902,449.84/17,643.39
  6. Step 6: Final answer
    x = 17,734.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.