Home / 26,712.78-40,081.77-11,920.38

Finding the Fourth Proportional to 26,712.78, 40,081.77 and 11,920.38

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Solution

The fourth proportional to 26,712.78, 40,081.77 and 11,920.38 is: 17,886.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,712.78 : 40,081.77 = 11,920.38 : x
  2. Step 2: Convert to fraction form
    26,712.78/40,081.77 = 11,920.38/x
  3. Step 3: Cross multiply
    26,712.78x = 40,081.77 × 11,920.38
  4. Step 4: Simplify right side
    26,712.78x = 477,789,929.47
  5. Step 5: Solve for x
    x = 477,789,929.47/26,712.78
  6. Step 6: Final answer
    x = 17,886.19

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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.