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Finding the Fourth Proportional to 26,649.54, 39,979.98 and 7,930.44

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Solution

The fourth proportional to 26,649.54, 39,979.98 and 7,930.44 is: 11,897.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,649.54 : 39,979.98 = 7,930.44 : x
  2. Step 2: Convert to fraction form
    26,649.54/39,979.98 = 7,930.44/x
  3. Step 3: Cross multiply
    26,649.54x = 39,979.98 × 7,930.44
  4. Step 4: Simplify right side
    26,649.54x = 317,058,832.59
  5. Step 5: Solve for x
    x = 317,058,832.59/26,649.54
  6. Step 6: Final answer
    x = 11,897.35

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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.