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Finding the Fourth Proportional to 29,120.40, 43,653.87 and 9,388.80

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Solution

The fourth proportional to 29,120.40, 43,653.87 and 9,388.80 is: 14,074.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,120.40 : 43,653.87 = 9,388.80 : x
  2. Step 2: Convert to fraction form
    29,120.40/43,653.87 = 9,388.80/x
  3. Step 3: Cross multiply
    29,120.40x = 43,653.87 × 9,388.80
  4. Step 4: Simplify right side
    29,120.40x = 409,857,454.66
  5. Step 5: Solve for x
    x = 409,857,454.66/29,120.40
  6. Step 6: Final answer
    x = 14,074.58

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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.