Home / 11,979.28-18,009.46-9,655.60

Finding the Fourth Proportional to 11,979.28, 18,009.46 and 9,655.60

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Solution

The fourth proportional to 11,979.28, 18,009.46 and 9,655.60 is: 14,516.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.28 : 18,009.46 = 9,655.60 : x
  2. Step 2: Convert to fraction form
    11,979.28/18,009.46 = 9,655.60/x
  3. Step 3: Cross multiply
    11,979.28x = 18,009.46 × 9,655.60
  4. Step 4: Simplify right side
    11,979.28x = 173,892,141.98
  5. Step 5: Solve for x
    x = 173,892,141.98/11,979.28
  6. Step 6: Final answer
    x = 14,516.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.