Home / 26,680.78-40,021.15-6,959.28

Finding the Fourth Proportional to 26,680.78, 40,021.15 and 6,959.28

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Solution

The fourth proportional to 26,680.78, 40,021.15 and 6,959.28 is: 10,438.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,680.78 : 40,021.15 = 6,959.28 : x
  2. Step 2: Convert to fraction form
    26,680.78/40,021.15 = 6,959.28/x
  3. Step 3: Cross multiply
    26,680.78x = 40,021.15 × 6,959.28
  4. Step 4: Simplify right side
    26,680.78x = 278,518,388.77
  5. Step 5: Solve for x
    x = 278,518,388.77/26,680.78
  6. Step 6: Final answer
    x = 10,438.91

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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.