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Finding the Fourth Proportional to 18,802.22, 28,207.06 and 8,414.06

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Solution

The fourth proportional to 18,802.22, 28,207.06 and 8,414.06 is: 12,622.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,802.22 : 28,207.06 = 8,414.06 : x
  2. Step 2: Convert to fraction form
    18,802.22/28,207.06 = 8,414.06/x
  3. Step 3: Cross multiply
    18,802.22x = 28,207.06 × 8,414.06
  4. Step 4: Simplify right side
    18,802.22x = 237,335,895.26
  5. Step 5: Solve for x
    x = 237,335,895.26/18,802.22
  6. Step 6: Final answer
    x = 12,622.76

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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.