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Finding the Fourth Proportional to 29,620.80, 44,431.20 and 7,434.90

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Solution

The fourth proportional to 29,620.80, 44,431.20 and 7,434.90 is: 11,152.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,620.80 : 44,431.20 = 7,434.90 : x
  2. Step 2: Convert to fraction form
    29,620.80/44,431.20 = 7,434.90/x
  3. Step 3: Cross multiply
    29,620.80x = 44,431.20 × 7,434.90
  4. Step 4: Simplify right side
    29,620.80x = 330,341,528.88
  5. Step 5: Solve for x
    x = 330,341,528.88/29,620.80
  6. Step 6: Final answer
    x = 11,152.35

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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.