Home / 11,439.28-17,150.40-7,731.10

Finding the Fourth Proportional to 11,439.28, 17,150.40 and 7,731.10

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Solution

The fourth proportional to 11,439.28, 17,150.40 and 7,731.10 is: 11,590.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.28 : 17,150.40 = 7,731.10 : x
  2. Step 2: Convert to fraction form
    11,439.28/17,150.40 = 7,731.10/x
  3. Step 3: Cross multiply
    11,439.28x = 17,150.40 × 7,731.10
  4. Step 4: Simplify right side
    11,439.28x = 132,591,457.44
  5. Step 5: Solve for x
    x = 132,591,457.44/11,439.28
  6. Step 6: Final answer
    x = 11,590.89

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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.