Home / 11,315.92-15,614.40-6,600.64

Finding the Fourth Proportional to 11,315.92, 15,614.40 and 6,600.64

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Solution

The fourth proportional to 11,315.92, 15,614.40 and 6,600.64 is: 9,107.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.92 : 15,614.40 = 6,600.64 : x
  2. Step 2: Convert to fraction form
    11,315.92/15,614.40 = 6,600.64/x
  3. Step 3: Cross multiply
    11,315.92x = 15,614.40 × 6,600.64
  4. Step 4: Simplify right side
    11,315.92x = 103,065,033.22
  5. Step 5: Solve for x
    x = 103,065,033.22/11,315.92
  6. Step 6: Final answer
    x = 9,107.97

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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.