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Finding the Fourth Proportional to 18,158.62, 27,283.74 and 17,420.53

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Solution

The fourth proportional to 18,158.62, 27,283.74 and 17,420.53 is: 26,174.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,158.62 : 27,283.74 = 17,420.53 : x
  2. Step 2: Convert to fraction form
    18,158.62/27,283.74 = 17,420.53/x
  3. Step 3: Cross multiply
    18,158.62x = 27,283.74 × 17,420.53
  4. Step 4: Simplify right side
    18,158.62x = 475,297,211.18
  5. Step 5: Solve for x
    x = 475,297,211.18/18,158.62
  6. Step 6: Final answer
    x = 26,174.74

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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.