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Finding the Fourth Proportional to 18,989.44, 26,200.96 and 11,026.88

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Solution

The fourth proportional to 18,989.44, 26,200.96 and 11,026.88 is: 15,214.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.44 : 26,200.96 = 11,026.88 : x
  2. Step 2: Convert to fraction form
    18,989.44/26,200.96 = 11,026.88/x
  3. Step 3: Cross multiply
    18,989.44x = 26,200.96 × 11,026.88
  4. Step 4: Simplify right side
    18,989.44x = 288,914,841.80
  5. Step 5: Solve for x
    x = 288,914,841.80/18,989.44
  6. Step 6: Final answer
    x = 15,214.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.