Home / 10,881.67-16,329.80-6,988.81

Finding the Fourth Proportional to 10,881.67, 16,329.80 and 6,988.81

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Solution

The fourth proportional to 10,881.67, 16,329.80 and 6,988.81 is: 10,487.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,881.67 : 16,329.80 = 6,988.81 : x
  2. Step 2: Convert to fraction form
    10,881.67/16,329.80 = 6,988.81/x
  3. Step 3: Cross multiply
    10,881.67x = 16,329.80 × 6,988.81
  4. Step 4: Simplify right side
    10,881.67x = 114,125,869.54
  5. Step 5: Solve for x
    x = 114,125,869.54/10,881.67
  6. Step 6: Final answer
    x = 10,487.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.