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Finding the Fourth Proportional to 18,911.30, 26,095.88 and 10,954.05

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Solution

The fourth proportional to 18,911.30, 26,095.88 and 10,954.05 is: 15,115.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.30 : 26,095.88 = 10,954.05 : x
  2. Step 2: Convert to fraction form
    18,911.30/26,095.88 = 10,954.05/x
  3. Step 3: Cross multiply
    18,911.30x = 26,095.88 × 10,954.05
  4. Step 4: Simplify right side
    18,911.30x = 285,855,519.54
  5. Step 5: Solve for x
    x = 285,855,519.54/18,911.30
  6. Step 6: Final answer
    x = 15,115.60

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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.