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Finding the Fourth Proportional to 21,874.56, 30,186.24 and 12,444.48

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Solution

The fourth proportional to 21,874.56, 30,186.24 and 12,444.48 is: 17,173.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,874.56 : 30,186.24 = 12,444.48 : x
  2. Step 2: Convert to fraction form
    21,874.56/30,186.24 = 12,444.48/x
  3. Step 3: Cross multiply
    21,874.56x = 30,186.24 × 12,444.48
  4. Step 4: Simplify right side
    21,874.56x = 375,652,059.96
  5. Step 5: Solve for x
    x = 375,652,059.96/21,874.56
  6. Step 6: Final answer
    x = 17,173.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.