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Finding the Fourth Proportional to 26,611.71, 39,918.78 and 9,081.69

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Solution

The fourth proportional to 26,611.71, 39,918.78 and 9,081.69 is: 13,622.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,611.71 : 39,918.78 = 9,081.69 : x
  2. Step 2: Convert to fraction form
    26,611.71/39,918.78 = 9,081.69/x
  3. Step 3: Cross multiply
    26,611.71x = 39,918.78 × 9,081.69
  4. Step 4: Simplify right side
    26,611.71x = 362,529,985.14
  5. Step 5: Solve for x
    x = 362,529,985.14/26,611.71
  6. Step 6: Final answer
    x = 13,622.95

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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.