Home / 20,145.57-27,800.25-11,192.82

Finding the Fourth Proportional to 20,145.57, 27,800.25 and 11,192.82

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Solution

The fourth proportional to 20,145.57, 27,800.25 and 11,192.82 is: 15,445.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.57 : 27,800.25 = 11,192.82 : x
  2. Step 2: Convert to fraction form
    20,145.57/27,800.25 = 11,192.82/x
  3. Step 3: Cross multiply
    20,145.57x = 27,800.25 × 11,192.82
  4. Step 4: Simplify right side
    20,145.57x = 311,163,194.21
  5. Step 5: Solve for x
    x = 311,163,194.21/20,145.57
  6. Step 6: Final answer
    x = 15,445.74

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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.