Home / 54,211.60-81,317.40-20,933.20

Finding the Fourth Proportional to 54,211.60, 81,317.40 and 20,933.20

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Solution

The fourth proportional to 54,211.60, 81,317.40 and 20,933.20 is: 31,399.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,211.60 : 81,317.40 = 20,933.20 : x
  2. Step 2: Convert to fraction form
    54,211.60/81,317.40 = 20,933.20/x
  3. Step 3: Cross multiply
    54,211.60x = 81,317.40 × 20,933.20
  4. Step 4: Simplify right side
    54,211.60x = 1,702,233,397.68
  5. Step 5: Solve for x
    x = 1,702,233,397.68/54,211.60
  6. Step 6: Final answer
    x = 31,399.80

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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.