Home / 13,369.88-18,437.82-9,974.38

Finding the Fourth Proportional to 13,369.88, 18,437.82 and 9,974.38

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Solution

The fourth proportional to 13,369.88, 18,437.82 and 9,974.38 is: 13,755.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,369.88 : 18,437.82 = 9,974.38 : x
  2. Step 2: Convert to fraction form
    13,369.88/18,437.82 = 9,974.38/x
  3. Step 3: Cross multiply
    13,369.88x = 18,437.82 × 9,974.38
  4. Step 4: Simplify right side
    13,369.88x = 183,905,823.05
  5. Step 5: Solve for x
    x = 183,905,823.05/13,369.88
  6. Step 6: Final answer
    x = 13,755.23

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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.