Home / 18,820.06-28,241.02-8,431.81

Finding the Fourth Proportional to 18,820.06, 28,241.02 and 8,431.81

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Solution

The fourth proportional to 18,820.06, 28,241.02 and 8,431.81 is: 12,652.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.06 : 28,241.02 = 8,431.81 : x
  2. Step 2: Convert to fraction form
    18,820.06/28,241.02 = 8,431.81/x
  3. Step 3: Cross multiply
    18,820.06x = 28,241.02 × 8,431.81
  4. Step 4: Simplify right side
    18,820.06x = 238,122,844.24
  5. Step 5: Solve for x
    x = 238,122,844.24/18,820.06
  6. Step 6: Final answer
    x = 12,652.61

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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.