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Finding the Fourth Proportional to 18,245.88, 27,312.12 and 9,905.22

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Solution

The fourth proportional to 18,245.88, 27,312.12 and 9,905.22 is: 14,827.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,245.88 : 27,312.12 = 9,905.22 : x
  2. Step 2: Convert to fraction form
    18,245.88/27,312.12 = 9,905.22/x
  3. Step 3: Cross multiply
    18,245.88x = 27,312.12 × 9,905.22
  4. Step 4: Simplify right side
    18,245.88x = 270,532,557.27
  5. Step 5: Solve for x
    x = 270,532,557.27/18,245.88
  6. Step 6: Final answer
    x = 14,827.05

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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.