Home / 10,949.76-16,439.16-6,515.64

Finding the Fourth Proportional to 10,949.76, 16,439.16 and 6,515.64

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Solution

The fourth proportional to 10,949.76, 16,439.16 and 6,515.64 is: 9,782.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,949.76 : 16,439.16 = 6,515.64 : x
  2. Step 2: Convert to fraction form
    10,949.76/16,439.16 = 6,515.64/x
  3. Step 3: Cross multiply
    10,949.76x = 16,439.16 × 6,515.64
  4. Step 4: Simplify right side
    10,949.76x = 107,111,648.46
  5. Step 5: Solve for x
    x = 107,111,648.46/10,949.76
  6. Step 6: Final answer
    x = 9,782.10

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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.