Home / 13,350.39-18,422.73-7,381.68

Finding the Fourth Proportional to 13,350.39, 18,422.73 and 7,381.68

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Solution

The fourth proportional to 13,350.39, 18,422.73 and 7,381.68 is: 10,186.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,350.39 : 18,422.73 = 7,381.68 : x
  2. Step 2: Convert to fraction form
    13,350.39/18,422.73 = 7,381.68/x
  3. Step 3: Cross multiply
    13,350.39x = 18,422.73 × 7,381.68
  4. Step 4: Simplify right side
    13,350.39x = 135,990,697.59
  5. Step 5: Solve for x
    x = 135,990,697.59/13,350.39
  6. Step 6: Final answer
    x = 10,186.27

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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.