Home / 13,318.99-18,380.14-7,351.02

Finding the Fourth Proportional to 13,318.99, 18,380.14 and 7,351.02

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Solution

The fourth proportional to 13,318.99, 18,380.14 and 7,351.02 is: 10,144.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.99 : 18,380.14 = 7,351.02 : x
  2. Step 2: Convert to fraction form
    13,318.99/18,380.14 = 7,351.02/x
  3. Step 3: Cross multiply
    13,318.99x = 18,380.14 × 7,351.02
  4. Step 4: Simplify right side
    13,318.99x = 135,112,854.86
  5. Step 5: Solve for x
    x = 135,112,854.86/13,318.99
  6. Step 6: Final answer
    x = 10,144.38

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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.