Home / 39,855.20-55,001.37-21,707.12

Finding the Fourth Proportional to 39,855.20, 55,001.37 and 21,707.12

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Solution

The fourth proportional to 39,855.20, 55,001.37 and 21,707.12 is: 29,956.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,855.20 : 55,001.37 = 21,707.12 : x
  2. Step 2: Convert to fraction form
    39,855.20/55,001.37 = 21,707.12/x
  3. Step 3: Cross multiply
    39,855.20x = 55,001.37 × 21,707.12
  4. Step 4: Simplify right side
    39,855.20x = 1,193,921,338.75
  5. Step 5: Solve for x
    x = 1,193,921,338.75/39,855.20
  6. Step 6: Final answer
    x = 29,956.48

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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.