Home / 20,365.24-28,101.18-11,412.04

Finding the Fourth Proportional to 20,365.24, 28,101.18 and 11,412.04

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Solution

The fourth proportional to 20,365.24, 28,101.18 and 11,412.04 is: 15,747.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.24 : 28,101.18 = 11,412.04 : x
  2. Step 2: Convert to fraction form
    20,365.24/28,101.18 = 11,412.04/x
  3. Step 3: Cross multiply
    20,365.24x = 28,101.18 × 11,412.04
  4. Step 4: Simplify right side
    20,365.24x = 320,691,790.21
  5. Step 5: Solve for x
    x = 320,691,790.21/20,365.24
  6. Step 6: Final answer
    x = 15,747.02

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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.