Home / 13,419.82-18,519.48-7,369.66

Finding the Fourth Proportional to 13,419.82, 18,519.48 and 7,369.66

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Solution

The fourth proportional to 13,419.82, 18,519.48 and 7,369.66 is: 10,170.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.82 : 18,519.48 = 7,369.66 : x
  2. Step 2: Convert to fraction form
    13,419.82/18,519.48 = 7,369.66/x
  3. Step 3: Cross multiply
    13,419.82x = 18,519.48 × 7,369.66
  4. Step 4: Simplify right side
    13,419.82x = 136,482,270.98
  5. Step 5: Solve for x
    x = 136,482,270.98/13,419.82
  6. Step 6: Final answer
    x = 10,170.20

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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.