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Finding the Fourth Proportional to 18,840.83, 28,241.19 and 8,959.22

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Solution

The fourth proportional to 18,840.83, 28,241.19 and 8,959.22 is: 13,429.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,840.83 : 28,241.19 = 8,959.22 : x
  2. Step 2: Convert to fraction form
    18,840.83/28,241.19 = 8,959.22/x
  3. Step 3: Cross multiply
    18,840.83x = 28,241.19 × 8,959.22
  4. Step 4: Simplify right side
    18,840.83x = 253,019,034.27
  5. Step 5: Solve for x
    x = 253,019,034.27/18,840.83
  6. Step 6: Final answer
    x = 13,429.29

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1.5x scale

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.