Home / 11,907.77-16,431.92-6,872.20

Finding the Fourth Proportional to 11,907.77, 16,431.92 and 6,872.20

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Solution

The fourth proportional to 11,907.77, 16,431.92 and 6,872.20 is: 9,483.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,907.77 : 16,431.92 = 6,872.20 : x
  2. Step 2: Convert to fraction form
    11,907.77/16,431.92 = 6,872.20/x
  3. Step 3: Cross multiply
    11,907.77x = 16,431.92 × 6,872.20
  4. Step 4: Simplify right side
    11,907.77x = 112,923,440.62
  5. Step 5: Solve for x
    x = 112,923,440.62/11,907.77
  6. Step 6: Final answer
    x = 9,483.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.