Home / 11,355.50-15,672.75-6,387.50

Finding the Fourth Proportional to 11,355.50, 15,672.75 and 6,387.50

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Solution

The fourth proportional to 11,355.50, 15,672.75 and 6,387.50 is: 8,815.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.50 : 15,672.75 = 6,387.50 : x
  2. Step 2: Convert to fraction form
    11,355.50/15,672.75 = 6,387.50/x
  3. Step 3: Cross multiply
    11,355.50x = 15,672.75 × 6,387.50
  4. Step 4: Simplify right side
    11,355.50x = 100,109,690.63
  5. Step 5: Solve for x
    x = 100,109,690.63/11,355.50
  6. Step 6: Final answer
    x = 8,815.97

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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.