Home / 54,015.60-81,023.40-18,958.80

Finding the Fourth Proportional to 54,015.60, 81,023.40 and 18,958.80

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Solution

The fourth proportional to 54,015.60, 81,023.40 and 18,958.80 is: 28,438.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,015.60 : 81,023.40 = 18,958.80 : x
  2. Step 2: Convert to fraction form
    54,015.60/81,023.40 = 18,958.80/x
  3. Step 3: Cross multiply
    54,015.60x = 81,023.40 × 18,958.80
  4. Step 4: Simplify right side
    54,015.60x = 1,536,106,435.92
  5. Step 5: Solve for x
    x = 1,536,106,435.92/54,015.60
  6. Step 6: Final answer
    x = 28,438.20

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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.