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Finding the Fourth Proportional to 18,019.56, 27,010.90 and 10,211.88

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Solution

The fourth proportional to 18,019.56, 27,010.90 and 10,211.88 is: 15,307.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,019.56 : 27,010.90 = 10,211.88 : x
  2. Step 2: Convert to fraction form
    18,019.56/27,010.90 = 10,211.88/x
  3. Step 3: Cross multiply
    18,019.56x = 27,010.90 × 10,211.88
  4. Step 4: Simplify right side
    18,019.56x = 275,832,069.49
  5. Step 5: Solve for x
    x = 275,832,069.49/18,019.56
  6. Step 6: Final answer
    x = 15,307.37

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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.