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Finding the Fourth Proportional to 26,259, 39,388.50 and 7,791

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Solution

The fourth proportional to 26,259, 39,388.50 and 7,791 is: 11,686.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,259 : 39,388.50 = 7,791 : x
  2. Step 2: Convert to fraction form
    26,259/39,388.50 = 7,791/x
  3. Step 3: Cross multiply
    26,259x = 39,388.50 × 7,791
  4. Step 4: Simplify right side
    26,259x = 306,875,803.50
  5. Step 5: Solve for x
    x = 306,875,803.50/26,259
  6. Step 6: Final answer
    x = 11,686.50

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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.