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Finding the Fourth Proportional to 11,235.76, 15,488.94 and 7,867.96

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Solution

The fourth proportional to 11,235.76, 15,488.94 and 7,867.96 is: 10,846.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,235.76 : 15,488.94 = 7,867.96 : x
  2. Step 2: Convert to fraction form
    11,235.76/15,488.94 = 7,867.96/x
  3. Step 3: Cross multiply
    11,235.76x = 15,488.94 × 7,867.96
  4. Step 4: Simplify right side
    11,235.76x = 121,866,360.36
  5. Step 5: Solve for x
    x = 121,866,360.36/11,235.76
  6. Step 6: Final answer
    x = 10,846.29

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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.