Home / 53,270.40-79,905.60-19,991.55

Finding the Fourth Proportional to 53,270.40, 79,905.60 and 19,991.55

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Solution

The fourth proportional to 53,270.40, 79,905.60 and 19,991.55 is: 29,987.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,270.40 : 79,905.60 = 19,991.55 : x
  2. Step 2: Convert to fraction form
    53,270.40/79,905.60 = 19,991.55/x
  3. Step 3: Cross multiply
    53,270.40x = 79,905.60 × 19,991.55
  4. Step 4: Simplify right side
    53,270.40x = 1,597,436,797.68
  5. Step 5: Solve for x
    x = 1,597,436,797.68/53,270.40
  6. Step 6: Final answer
    x = 29,987.33

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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.