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Finding the Fourth Proportional to 29,947.40, 44,921.10 and 20,616.20

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Solution

The fourth proportional to 29,947.40, 44,921.10 and 20,616.20 is: 30,924.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,947.40 : 44,921.10 = 20,616.20 : x
  2. Step 2: Convert to fraction form
    29,947.40/44,921.10 = 20,616.20/x
  3. Step 3: Cross multiply
    29,947.40x = 44,921.10 × 20,616.20
  4. Step 4: Simplify right side
    29,947.40x = 926,102,381.82
  5. Step 5: Solve for x
    x = 926,102,381.82/29,947.40
  6. Step 6: Final answer
    x = 30,924.30

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Similar ratio
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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.