Home / 11,144.52-15,379.47-6,431.54

Finding the Fourth Proportional to 11,144.52, 15,379.47 and 6,431.54

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Solution

The fourth proportional to 11,144.52, 15,379.47 and 6,431.54 is: 8,875.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,144.52 : 15,379.47 = 6,431.54 : x
  2. Step 2: Convert to fraction form
    11,144.52/15,379.47 = 6,431.54/x
  3. Step 3: Cross multiply
    11,144.52x = 15,379.47 × 6,431.54
  4. Step 4: Simplify right side
    11,144.52x = 98,913,599.59
  5. Step 5: Solve for x
    x = 98,913,599.59/11,144.52
  6. Step 6: Final answer
    x = 8,875.54

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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.