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Finding the Fourth Proportional to 29,138.80, 43,697.40 and 10,411.60

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Solution

The fourth proportional to 29,138.80, 43,697.40 and 10,411.60 is: 15,613.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,138.80 : 43,697.40 = 10,411.60 : x
  2. Step 2: Convert to fraction form
    29,138.80/43,697.40 = 10,411.60/x
  3. Step 3: Cross multiply
    29,138.80x = 43,697.40 × 10,411.60
  4. Step 4: Simplify right side
    29,138.80x = 454,959,849.84
  5. Step 5: Solve for x
    x = 454,959,849.84/29,138.80
  6. Step 6: Final answer
    x = 15,613.54

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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.