Home / 53,147.97-79,722.15-21,558.60

Finding the Fourth Proportional to 53,147.97, 79,722.15 and 21,558.60

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Solution

The fourth proportional to 53,147.97, 79,722.15 and 21,558.60 is: 32,337.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,147.97 : 79,722.15 = 21,558.60 : x
  2. Step 2: Convert to fraction form
    53,147.97/79,722.15 = 21,558.60/x
  3. Step 3: Cross multiply
    53,147.97x = 79,722.15 × 21,558.60
  4. Step 4: Simplify right side
    53,147.97x = 1,718,697,942.99
  5. Step 5: Solve for x
    x = 1,718,697,942.99/53,147.97
  6. Step 6: Final answer
    x = 32,337.98

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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.