Home / 13,951.89-19,257.87-8,287.56

Finding the Fourth Proportional to 13,951.89, 19,257.87 and 8,287.56

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Solution

The fourth proportional to 13,951.89, 19,257.87 and 8,287.56 is: 11,439.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,951.89 : 19,257.87 = 8,287.56 : x
  2. Step 2: Convert to fraction form
    13,951.89/19,257.87 = 8,287.56/x
  3. Step 3: Cross multiply
    13,951.89x = 19,257.87 × 8,287.56
  4. Step 4: Simplify right side
    13,951.89x = 159,600,753.10
  5. Step 5: Solve for x
    x = 159,600,753.10/13,951.89
  6. Step 6: Final answer
    x = 11,439.36

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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.