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Finding the Fourth Proportional to 30,174.30, 45,261.45 and 21,836.70

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Solution

The fourth proportional to 30,174.30, 45,261.45 and 21,836.70 is: 32,755.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,174.30 : 45,261.45 = 21,836.70 : x
  2. Step 2: Convert to fraction form
    30,174.30/45,261.45 = 21,836.70/x
  3. Step 3: Cross multiply
    30,174.30x = 45,261.45 × 21,836.70
  4. Step 4: Simplify right side
    30,174.30x = 988,360,705.22
  5. Step 5: Solve for x
    x = 988,360,705.22/30,174.30
  6. Step 6: Final answer
    x = 32,755.05

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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.