Home / 14,651.36-20,215.68-8,680.04

Finding the Fourth Proportional to 14,651.36, 20,215.68 and 8,680.04

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Solution

The fourth proportional to 14,651.36, 20,215.68 and 8,680.04 is: 11,976.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,651.36 : 20,215.68 = 8,680.04 : x
  2. Step 2: Convert to fraction form
    14,651.36/20,215.68 = 8,680.04/x
  3. Step 3: Cross multiply
    14,651.36x = 20,215.68 × 8,680.04
  4. Step 4: Simplify right side
    14,651.36x = 175,472,911.03
  5. Step 5: Solve for x
    x = 175,472,911.03/14,651.36
  6. Step 6: Final answer
    x = 11,976.56

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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.