Home / 26,809.29-40,187.78-12,765.54

Finding the Fourth Proportional to 26,809.29, 40,187.78 and 12,765.54

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Solution

The fourth proportional to 26,809.29, 40,187.78 and 12,765.54 is: 19,135.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,809.29 : 40,187.78 = 12,765.54 : x
  2. Step 2: Convert to fraction form
    26,809.29/40,187.78 = 12,765.54/x
  3. Step 3: Cross multiply
    26,809.29x = 40,187.78 × 12,765.54
  4. Step 4: Simplify right side
    26,809.29x = 513,018,713.10
  5. Step 5: Solve for x
    x = 513,018,713.10/26,809.29
  6. Step 6: Final answer
    x = 19,135.86

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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.