Home / 13,908.24-20,862.36-3,519.72

Finding the Fourth Proportional to 13,908.24, 20,862.36 and 3,519.72

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Solution

The fourth proportional to 13,908.24, 20,862.36 and 3,519.72 is: 5,279.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.24 : 20,862.36 = 3,519.72 : x
  2. Step 2: Convert to fraction form
    13,908.24/20,862.36 = 3,519.72/x
  3. Step 3: Cross multiply
    13,908.24x = 20,862.36 × 3,519.72
  4. Step 4: Simplify right side
    13,908.24x = 73,429,665.74
  5. Step 5: Solve for x
    x = 73,429,665.74/13,908.24
  6. Step 6: Final answer
    x = 5,279.58

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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.