Home / 11,475.05-15,836.39-6,439.76

Finding the Fourth Proportional to 11,475.05, 15,836.39 and 6,439.76

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Solution

The fourth proportional to 11,475.05, 15,836.39 and 6,439.76 is: 8,887.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,475.05 : 15,836.39 = 6,439.76 : x
  2. Step 2: Convert to fraction form
    11,475.05/15,836.39 = 6,439.76/x
  3. Step 3: Cross multiply
    11,475.05x = 15,836.39 × 6,439.76
  4. Step 4: Simplify right side
    11,475.05x = 101,982,439.49
  5. Step 5: Solve for x
    x = 101,982,439.49/11,475.05
  6. Step 6: Final answer
    x = 8,887.32

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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.