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Finding the Fourth Proportional to 26,698.94, 40,047.87 and 7,979.03

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Solution

The fourth proportional to 26,698.94, 40,047.87 and 7,979.03 is: 11,968.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,698.94 : 40,047.87 = 7,979.03 : x
  2. Step 2: Convert to fraction form
    26,698.94/40,047.87 = 7,979.03/x
  3. Step 3: Cross multiply
    26,698.94x = 40,047.87 × 7,979.03
  4. Step 4: Simplify right side
    26,698.94x = 319,543,156.17
  5. Step 5: Solve for x
    x = 319,543,156.17/26,698.94
  6. Step 6: Final answer
    x = 11,968.38

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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.