Home / 10,929.79-16,390.66-3,907.91

Finding the Fourth Proportional to 10,929.79, 16,390.66 and 3,907.91

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Solution

The fourth proportional to 10,929.79, 16,390.66 and 3,907.91 is: 5,860.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.79 : 16,390.66 = 3,907.91 : x
  2. Step 2: Convert to fraction form
    10,929.79/16,390.66 = 3,907.91/x
  3. Step 3: Cross multiply
    10,929.79x = 16,390.66 × 3,907.91
  4. Step 4: Simplify right side
    10,929.79x = 64,053,224.12
  5. Step 5: Solve for x
    x = 64,053,224.12/10,929.79
  6. Step 6: Final answer
    x = 5,860.43

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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.