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Finding the Fourth Proportional to 26,439, 36,485.82 and 15,261

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Solution

The fourth proportional to 26,439, 36,485.82 and 15,261 is: 21,060.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,439 : 36,485.82 = 15,261 : x
  2. Step 2: Convert to fraction form
    26,439/36,485.82 = 15,261/x
  3. Step 3: Cross multiply
    26,439x = 36,485.82 × 15,261
  4. Step 4: Simplify right side
    26,439x = 556,810,099.02
  5. Step 5: Solve for x
    x = 556,810,099.02/26,439
  6. Step 6: Final answer
    x = 21,060.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.