Home / 20,103.96-27,743.64-11,152.20

Finding the Fourth Proportional to 20,103.96, 27,743.64 and 11,152.20

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Solution

The fourth proportional to 20,103.96, 27,743.64 and 11,152.20 is: 15,390.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.96 : 27,743.64 = 11,152.20 : x
  2. Step 2: Convert to fraction form
    20,103.96/27,743.64 = 11,152.20/x
  3. Step 3: Cross multiply
    20,103.96x = 27,743.64 × 11,152.20
  4. Step 4: Simplify right side
    20,103.96x = 309,402,622.01
  5. Step 5: Solve for x
    x = 309,402,622.01/20,103.96
  6. Step 6: Final answer
    x = 15,390.13

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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.