Home / 11,150.46-15,388.38-6,434.64

Finding the Fourth Proportional to 11,150.46, 15,388.38 and 6,434.64

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Solution

The fourth proportional to 11,150.46, 15,388.38 and 6,434.64 is: 8,880.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,150.46 : 15,388.38 = 6,434.64 : x
  2. Step 2: Convert to fraction form
    11,150.46/15,388.38 = 6,434.64/x
  3. Step 3: Cross multiply
    11,150.46x = 15,388.38 × 6,434.64
  4. Step 4: Simplify right side
    11,150.46x = 99,018,685.48
  5. Step 5: Solve for x
    x = 99,018,685.48/11,150.46
  6. Step 6: Final answer
    x = 8,880.23

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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.