Home / 20,513.61-30,775.28-7,367.31

Finding the Fourth Proportional to 20,513.61, 30,775.28 and 7,367.31

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Solution

The fourth proportional to 20,513.61, 30,775.28 and 7,367.31 is: 11,052.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.61 : 30,775.28 = 7,367.31 : x
  2. Step 2: Convert to fraction form
    20,513.61/30,775.28 = 7,367.31/x
  3. Step 3: Cross multiply
    20,513.61x = 30,775.28 × 7,367.31
  4. Step 4: Simplify right side
    20,513.61x = 226,730,991.26
  5. Step 5: Solve for x
    x = 226,730,991.26/20,513.61
  6. Step 6: Final answer
    x = 11,052.71

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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.