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Finding the Fourth Proportional to 18,301.74, 27,442.88 and 8,432.63

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Solution

The fourth proportional to 18,301.74, 27,442.88 and 8,432.63 is: 12,644.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,301.74 : 27,442.88 = 8,432.63 : x
  2. Step 2: Convert to fraction form
    18,301.74/27,442.88 = 8,432.63/x
  3. Step 3: Cross multiply
    18,301.74x = 27,442.88 × 8,432.63
  4. Step 4: Simplify right side
    18,301.74x = 231,415,653.17
  5. Step 5: Solve for x
    x = 231,415,653.17/18,301.74
  6. Step 6: Final answer
    x = 12,644.46

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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.