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Finding the Fourth Proportional to 25,758.40, 38,606.40 and 10,936.20

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Solution

The fourth proportional to 25,758.40, 38,606.40 and 10,936.20 is: 16,391.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,758.40 : 38,606.40 = 10,936.20 : x
  2. Step 2: Convert to fraction form
    25,758.40/38,606.40 = 10,936.20/x
  3. Step 3: Cross multiply
    25,758.40x = 38,606.40 × 10,936.20
  4. Step 4: Simplify right side
    25,758.40x = 422,207,311.68
  5. Step 5: Solve for x
    x = 422,207,311.68/25,758.40
  6. Step 6: Final answer
    x = 16,391.05

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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.