Home / 18,905.42-28,359.70-5,757.90

Finding the Fourth Proportional to 18,905.42, 28,359.70 and 5,757.90

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Solution

The fourth proportional to 18,905.42, 28,359.70 and 5,757.90 is: 8,637.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.42 : 28,359.70 = 5,757.90 : x
  2. Step 2: Convert to fraction form
    18,905.42/28,359.70 = 5,757.90/x
  3. Step 3: Cross multiply
    18,905.42x = 28,359.70 × 5,757.90
  4. Step 4: Simplify right side
    18,905.42x = 163,292,316.63
  5. Step 5: Solve for x
    x = 163,292,316.63/18,905.42
  6. Step 6: Final answer
    x = 8,637.33

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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.