Home / 20,983.99-28,957.75-11,552.35

Finding the Fourth Proportional to 20,983.99, 28,957.75 and 11,552.35

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Solution

The fourth proportional to 20,983.99, 28,957.75 and 11,552.35 is: 15,942.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.99 : 28,957.75 = 11,552.35 : x
  2. Step 2: Convert to fraction form
    20,983.99/28,957.75 = 11,552.35/x
  3. Step 3: Cross multiply
    20,983.99x = 28,957.75 × 11,552.35
  4. Step 4: Simplify right side
    20,983.99x = 334,530,063.21
  5. Step 5: Solve for x
    x = 334,530,063.21/20,983.99
  6. Step 6: Final answer
    x = 15,942.16

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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.