Home / 26,788.72-40,186.32-12,928

Finding the Fourth Proportional to 26,788.72, 40,186.32 and 12,928

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Solution

The fourth proportional to 26,788.72, 40,186.32 and 12,928 is: 19,393.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,788.72 : 40,186.32 = 12,928 : x
  2. Step 2: Convert to fraction form
    26,788.72/40,186.32 = 12,928/x
  3. Step 3: Cross multiply
    26,788.72x = 40,186.32 × 12,928
  4. Step 4: Simplify right side
    26,788.72x = 519,528,744.96
  5. Step 5: Solve for x
    x = 519,528,744.96/26,788.72
  6. Step 6: Final answer
    x = 19,393.56

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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.