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Finding the Fourth Proportional to 18,424.43, 27,636.53 and 5,276.82

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Solution

The fourth proportional to 18,424.43, 27,636.53 and 5,276.82 is: 7,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,424.43 : 27,636.53 = 5,276.82 : x
  2. Step 2: Convert to fraction form
    18,424.43/27,636.53 = 5,276.82/x
  3. Step 3: Cross multiply
    18,424.43x = 27,636.53 × 5,276.82
  4. Step 4: Simplify right side
    18,424.43x = 145,832,967.85
  5. Step 5: Solve for x
    x = 145,832,967.85/18,424.43
  6. Step 6: Final answer
    x = 7,915.20

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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.