Home / 11,129.94-15,357.81-6,652.74

Finding the Fourth Proportional to 11,129.94, 15,357.81 and 6,652.74

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Solution

The fourth proportional to 11,129.94, 15,357.81 and 6,652.74 is: 9,179.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.94 : 15,357.81 = 6,652.74 : x
  2. Step 2: Convert to fraction form
    11,129.94/15,357.81 = 6,652.74/x
  3. Step 3: Cross multiply
    11,129.94x = 15,357.81 × 6,652.74
  4. Step 4: Simplify right side
    11,129.94x = 102,171,516.90
  5. Step 5: Solve for x
    x = 102,171,516.90/11,129.94
  6. Step 6: Final answer
    x = 9,179.88

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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.