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Finding the Fourth Proportional to 18,156.98, 27,238.90 and 6,310.30

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Solution

The fourth proportional to 18,156.98, 27,238.90 and 6,310.30 is: 9,466.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,156.98 : 27,238.90 = 6,310.30 : x
  2. Step 2: Convert to fraction form
    18,156.98/27,238.90 = 6,310.30/x
  3. Step 3: Cross multiply
    18,156.98x = 27,238.90 × 6,310.30
  4. Step 4: Simplify right side
    18,156.98x = 171,885,630.67
  5. Step 5: Solve for x
    x = 171,885,630.67/18,156.98
  6. Step 6: Final answer
    x = 9,466.64

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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.