Home / 20,960.14-28,924.68-11,400.18

Finding the Fourth Proportional to 20,960.14, 28,924.68 and 11,400.18

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Solution

The fourth proportional to 20,960.14, 28,924.68 and 11,400.18 is: 15,732.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.14 : 28,924.68 = 11,400.18 : x
  2. Step 2: Convert to fraction form
    20,960.14/28,924.68 = 11,400.18/x
  3. Step 3: Cross multiply
    20,960.14x = 28,924.68 × 11,400.18
  4. Step 4: Simplify right side
    20,960.14x = 329,746,558.44
  5. Step 5: Solve for x
    x = 329,746,558.44/20,960.14
  6. Step 6: Final answer
    x = 15,732.08

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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.