Home / 18,865.80-28,298.70-5,717.52

Finding the Fourth Proportional to 18,865.80, 28,298.70 and 5,717.52

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Solution

The fourth proportional to 18,865.80, 28,298.70 and 5,717.52 is: 8,576.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.80 : 28,298.70 = 5,717.52 : x
  2. Step 2: Convert to fraction form
    18,865.80/28,298.70 = 5,717.52/x
  3. Step 3: Cross multiply
    18,865.80x = 28,298.70 × 5,717.52
  4. Step 4: Simplify right side
    18,865.80x = 161,798,383.22
  5. Step 5: Solve for x
    x = 161,798,383.22/18,865.80
  6. Step 6: Final answer
    x = 8,576.28

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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.