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Finding the Fourth Proportional to 13,282.40, 19,934.40 and 12,850.40

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Solution

The fourth proportional to 13,282.40, 19,934.40 and 12,850.40 is: 19,286.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,282.40 : 19,934.40 = 12,850.40 : x
  2. Step 2: Convert to fraction form
    13,282.40/19,934.40 = 12,850.40/x
  3. Step 3: Cross multiply
    13,282.40x = 19,934.40 × 12,850.40
  4. Step 4: Simplify right side
    13,282.40x = 256,165,013.76
  5. Step 5: Solve for x
    x = 256,165,013.76/13,282.40
  6. Step 6: Final answer
    x = 19,286.05

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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.