Home / 11,148.15-15,372.96-7,789.74

Finding the Fourth Proportional to 11,148.15, 15,372.96 and 7,789.74

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Solution

The fourth proportional to 11,148.15, 15,372.96 and 7,789.74 is: 10,741.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,148.15 : 15,372.96 = 7,789.74 : x
  2. Step 2: Convert to fraction form
    11,148.15/15,372.96 = 7,789.74/x
  3. Step 3: Cross multiply
    11,148.15x = 15,372.96 × 7,789.74
  4. Step 4: Simplify right side
    11,148.15x = 119,751,284.57
  5. Step 5: Solve for x
    x = 119,751,284.57/11,148.15
  6. Step 6: Final answer
    x = 10,741.81

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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.