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Finding the Fourth Proportional to 29,190.72, 43,787.02 and 11,420.68

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Solution

The fourth proportional to 29,190.72, 43,787.02 and 11,420.68 is: 17,131.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,190.72 : 43,787.02 = 11,420.68 : x
  2. Step 2: Convert to fraction form
    29,190.72/43,787.02 = 11,420.68/x
  3. Step 3: Cross multiply
    29,190.72x = 43,787.02 × 11,420.68
  4. Step 4: Simplify right side
    29,190.72x = 500,077,543.57
  5. Step 5: Solve for x
    x = 500,077,543.57/29,190.72
  6. Step 6: Final answer
    x = 17,131.39

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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.