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Finding the Fourth Proportional to 12,260.25, 18,390.65 and 3,026.25

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Solution

The fourth proportional to 12,260.25, 18,390.65 and 3,026.25 is: 4,539.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,260.25 : 18,390.65 = 3,026.25 : x
  2. Step 2: Convert to fraction form
    12,260.25/18,390.65 = 3,026.25/x
  3. Step 3: Cross multiply
    12,260.25x = 18,390.65 × 3,026.25
  4. Step 4: Simplify right side
    12,260.25x = 55,654,689.43
  5. Step 5: Solve for x
    x = 55,654,689.43/12,260.25
  6. Step 6: Final answer
    x = 4,539.44

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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.