Home / 11,911.76-16,440-6,875.04

Finding the Fourth Proportional to 11,911.76, 16,440 and 6,875.04

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Solution

The fourth proportional to 11,911.76, 16,440 and 6,875.04 is: 9,488.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,911.76 : 16,440 = 6,875.04 : x
  2. Step 2: Convert to fraction form
    11,911.76/16,440 = 6,875.04/x
  3. Step 3: Cross multiply
    11,911.76x = 16,440 × 6,875.04
  4. Step 4: Simplify right side
    11,911.76x = 113,025,657.60
  5. Step 5: Solve for x
    x = 113,025,657.60/11,911.76
  6. Step 6: Final answer
    x = 9,488.58

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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.