Home / 20,360.45-30,531.02-7,886.31

Finding the Fourth Proportional to 20,360.45, 30,531.02 and 7,886.31

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Solution

The fourth proportional to 20,360.45, 30,531.02 and 7,886.31 is: 11,825.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.45 : 30,531.02 = 7,886.31 : x
  2. Step 2: Convert to fraction form
    20,360.45/30,531.02 = 7,886.31/x
  3. Step 3: Cross multiply
    20,360.45x = 30,531.02 × 7,886.31
  4. Step 4: Simplify right side
    20,360.45x = 240,777,048.90
  5. Step 5: Solve for x
    x = 240,777,048.90/20,360.45
  6. Step 6: Final answer
    x = 11,825.73

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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.