Home / 10,982.90-15,155.44-6,505.90

Finding the Fourth Proportional to 10,982.90, 15,155.44 and 6,505.90

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Solution

The fourth proportional to 10,982.90, 15,155.44 and 6,505.90 is: 8,977.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,982.90 : 15,155.44 = 6,505.90 : x
  2. Step 2: Convert to fraction form
    10,982.90/15,155.44 = 6,505.90/x
  3. Step 3: Cross multiply
    10,982.90x = 15,155.44 × 6,505.90
  4. Step 4: Simplify right side
    10,982.90x = 98,599,777.10
  5. Step 5: Solve for x
    x = 98,599,777.10/10,982.90
  6. Step 6: Final answer
    x = 8,977.57

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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.