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Finding the Fourth Proportional to 29,165.80, 43,719.90 and 11,612.20

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Solution

The fourth proportional to 29,165.80, 43,719.90 and 11,612.20 is: 17,406.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,165.80 : 43,719.90 = 11,612.20 : x
  2. Step 2: Convert to fraction form
    29,165.80/43,719.90 = 11,612.20/x
  3. Step 3: Cross multiply
    29,165.80x = 43,719.90 × 11,612.20
  4. Step 4: Simplify right side
    29,165.80x = 507,684,222.78
  5. Step 5: Solve for x
    x = 507,684,222.78/29,165.80
  6. Step 6: Final answer
    x = 17,406.83

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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.