Home / 18,905.48-28,359.78-5,757.96

Finding the Fourth Proportional to 18,905.48, 28,359.78 and 5,757.96

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Solution

The fourth proportional to 18,905.48, 28,359.78 and 5,757.96 is: 8,637.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.48 : 28,359.78 = 5,757.96 : x
  2. Step 2: Convert to fraction form
    18,905.48/28,359.78 = 5,757.96/x
  3. Step 3: Cross multiply
    18,905.48x = 28,359.78 × 5,757.96
  4. Step 4: Simplify right side
    18,905.48x = 163,294,478.85
  5. Step 5: Solve for x
    x = 163,294,478.85/18,905.48
  6. Step 6: Final answer
    x = 8,637.42

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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.