Home / 10,980.07-16,431.80-8,982.61

Finding the Fourth Proportional to 10,980.07, 16,431.80 and 8,982.61

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Solution

The fourth proportional to 10,980.07, 16,431.80 and 8,982.61 is: 13,442.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,980.07 : 16,431.80 = 8,982.61 : x
  2. Step 2: Convert to fraction form
    10,980.07/16,431.80 = 8,982.61/x
  3. Step 3: Cross multiply
    10,980.07x = 16,431.80 × 8,982.61
  4. Step 4: Simplify right side
    10,980.07x = 147,600,365.01
  5. Step 5: Solve for x
    x = 147,600,365.01/10,980.07
  6. Step 6: Final answer
    x = 13,442.57

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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.