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Finding the Fourth Proportional to 18,620.88, 27,934.16 and 11,595.20

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Solution

The fourth proportional to 18,620.88, 27,934.16 and 11,595.20 is: 17,394.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.88 : 27,934.16 = 11,595.20 : x
  2. Step 2: Convert to fraction form
    18,620.88/27,934.16 = 11,595.20/x
  3. Step 3: Cross multiply
    18,620.88x = 27,934.16 × 11,595.20
  4. Step 4: Simplify right side
    18,620.88x = 323,902,172.03
  5. Step 5: Solve for x
    x = 323,902,172.03/18,620.88
  6. Step 6: Final answer
    x = 17,394.57

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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.