Home / 13,161.88-19,720.14-9,446.41

Finding the Fourth Proportional to 13,161.88, 19,720.14 and 9,446.41

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Solution

The fourth proportional to 13,161.88, 19,720.14 and 9,446.41 is: 14,153.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.88 : 19,720.14 = 9,446.41 : x
  2. Step 2: Convert to fraction form
    13,161.88/19,720.14 = 9,446.41/x
  3. Step 3: Cross multiply
    13,161.88x = 19,720.14 × 9,446.41
  4. Step 4: Simplify right side
    13,161.88x = 186,284,527.70
  5. Step 5: Solve for x
    x = 186,284,527.70/13,161.88
  6. Step 6: Final answer
    x = 14,153.34

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1.5x scale

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.