Home / 18,905.91-28,357.83-5,757.18

Finding the Fourth Proportional to 18,905.91, 28,357.83 and 5,757.18

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Solution

The fourth proportional to 18,905.91, 28,357.83 and 5,757.18 is: 8,635.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.91 : 28,357.83 = 5,757.18 : x
  2. Step 2: Convert to fraction form
    18,905.91/28,357.83 = 5,757.18/x
  3. Step 3: Cross multiply
    18,905.91x = 28,357.83 × 5,757.18
  4. Step 4: Simplify right side
    18,905.91x = 163,261,131.72
  5. Step 5: Solve for x
    x = 163,261,131.72/18,905.91
  6. Step 6: Final answer
    x = 8,635.45

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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.