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Finding the Fourth Proportional to 33,123.64, 45,710.64 and 18,219.64

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Solution

The fourth proportional to 33,123.64, 45,710.64 and 18,219.64 is: 25,143.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,123.64 : 45,710.64 = 18,219.64 : x
  2. Step 2: Convert to fraction form
    33,123.64/45,710.64 = 18,219.64/x
  3. Step 3: Cross multiply
    33,123.64x = 45,710.64 × 18,219.64
  4. Step 4: Simplify right side
    33,123.64x = 832,831,404.97
  5. Step 5: Solve for x
    x = 832,831,404.97/33,123.64
  6. Step 6: Final answer
    x = 25,143.11

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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.