Home / 11,187.75-15,439.54-6,709.87

Finding the Fourth Proportional to 11,187.75, 15,439.54 and 6,709.87

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Solution

The fourth proportional to 11,187.75, 15,439.54 and 6,709.87 is: 9,259.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.75 : 15,439.54 = 6,709.87 : x
  2. Step 2: Convert to fraction form
    11,187.75/15,439.54 = 6,709.87/x
  3. Step 3: Cross multiply
    11,187.75x = 15,439.54 × 6,709.87
  4. Step 4: Simplify right side
    11,187.75x = 103,597,276.05
  5. Step 5: Solve for x
    x = 103,597,276.05/11,187.75
  6. Step 6: Final answer
    x = 9,259.88

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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.