Home / 13,131.11-19,708.49-8,904.13

Finding the Fourth Proportional to 13,131.11, 19,708.49 and 8,904.13

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Solution

The fourth proportional to 13,131.11, 19,708.49 and 8,904.13 is: 13,364.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.11 : 19,708.49 = 8,904.13 : x
  2. Step 2: Convert to fraction form
    13,131.11/19,708.49 = 8,904.13/x
  3. Step 3: Cross multiply
    13,131.11x = 19,708.49 × 8,904.13
  4. Step 4: Simplify right side
    13,131.11x = 175,486,930.05
  5. Step 5: Solve for x
    x = 175,486,930.05/13,131.11
  6. Step 6: Final answer
    x = 13,364.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.