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Finding the Fourth Proportional to 26,281, 39,427.26 and 9,865

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Solution

The fourth proportional to 26,281, 39,427.26 and 9,865 is: 14,799.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,281 : 39,427.26 = 9,865 : x
  2. Step 2: Convert to fraction form
    26,281/39,427.26 = 9,865/x
  3. Step 3: Cross multiply
    26,281x = 39,427.26 × 9,865
  4. Step 4: Simplify right side
    26,281x = 388,949,919.90
  5. Step 5: Solve for x
    x = 388,949,919.90/26,281
  6. Step 6: Final answer
    x = 14,799.66

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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.