Home / 13,273.11-18,318.99-9,699.80

Finding the Fourth Proportional to 13,273.11, 18,318.99 and 9,699.80

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Solution

The fourth proportional to 13,273.11, 18,318.99 and 9,699.80 is: 13,387.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,273.11 : 18,318.99 = 9,699.80 : x
  2. Step 2: Convert to fraction form
    13,273.11/18,318.99 = 9,699.80/x
  3. Step 3: Cross multiply
    13,273.11x = 18,318.99 × 9,699.80
  4. Step 4: Simplify right side
    13,273.11x = 177,690,539.20
  5. Step 5: Solve for x
    x = 177,690,539.20/13,273.11
  6. Step 6: Final answer
    x = 13,387.26

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1.5x scale

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.