Home / 53,155.50-79,733.25-21,991.56

Finding the Fourth Proportional to 53,155.50, 79,733.25 and 21,991.56

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Solution

The fourth proportional to 53,155.50, 79,733.25 and 21,991.56 is: 32,987.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,155.50 : 79,733.25 = 21,991.56 : x
  2. Step 2: Convert to fraction form
    53,155.50/79,733.25 = 21,991.56/x
  3. Step 3: Cross multiply
    53,155.50x = 79,733.25 × 21,991.56
  4. Step 4: Simplify right side
    53,155.50x = 1,753,458,551.37
  5. Step 5: Solve for x
    x = 1,753,458,551.37/53,155.50
  6. Step 6: Final answer
    x = 32,987.34

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.