Home / 13,161.34-18,162.48-7,863.22

Finding the Fourth Proportional to 13,161.34, 18,162.48 and 7,863.22

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Solution

The fourth proportional to 13,161.34, 18,162.48 and 7,863.22 is: 10,851.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.34 : 18,162.48 = 7,863.22 : x
  2. Step 2: Convert to fraction form
    13,161.34/18,162.48 = 7,863.22/x
  3. Step 3: Cross multiply
    13,161.34x = 18,162.48 × 7,863.22
  4. Step 4: Simplify right side
    13,161.34x = 142,815,575.99
  5. Step 5: Solve for x
    x = 142,815,575.99/13,161.34
  6. Step 6: Final answer
    x = 10,851.14

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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.