Home / 13,755.17-20,660.36-13,367.58

Finding the Fourth Proportional to 13,755.17, 20,660.36 and 13,367.58

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Solution

The fourth proportional to 13,755.17, 20,660.36 and 13,367.58 is: 20,078.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.17 : 20,660.36 = 13,367.58 : x
  2. Step 2: Convert to fraction form
    13,755.17/20,660.36 = 13,367.58/x
  3. Step 3: Cross multiply
    13,755.17x = 20,660.36 × 13,367.58
  4. Step 4: Simplify right side
    13,755.17x = 276,178,948.29
  5. Step 5: Solve for x
    x = 276,178,948.29/13,755.17
  6. Step 6: Final answer
    x = 20,078.20

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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.