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Finding the Fourth Proportional to 18,461.34, 27,689.01 and 5,310.72

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Solution

The fourth proportional to 18,461.34, 27,689.01 and 5,310.72 is: 7,965.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.34 : 27,689.01 = 5,310.72 : x
  2. Step 2: Convert to fraction form
    18,461.34/27,689.01 = 5,310.72/x
  3. Step 3: Cross multiply
    18,461.34x = 27,689.01 × 5,310.72
  4. Step 4: Simplify right side
    18,461.34x = 147,048,579.19
  5. Step 5: Solve for x
    x = 147,048,579.19/18,461.34
  6. Step 6: Final answer
    x = 7,965.22

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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.