Home / 12,286.25-18,397.58-10,307.09

Finding the Fourth Proportional to 12,286.25, 18,397.58 and 10,307.09

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Solution

The fourth proportional to 12,286.25, 18,397.58 and 10,307.09 is: 15,433.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286.25 : 18,397.58 = 10,307.09 : x
  2. Step 2: Convert to fraction form
    12,286.25/18,397.58 = 10,307.09/x
  3. Step 3: Cross multiply
    12,286.25x = 18,397.58 × 10,307.09
  4. Step 4: Simplify right side
    12,286.25x = 189,625,369.32
  5. Step 5: Solve for x
    x = 189,625,369.32/12,286.25
  6. Step 6: Final answer
    x = 15,433.96

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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.