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Finding the Fourth Proportional to 29,130.48, 40,183.83 and 20,183.22

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Solution

The fourth proportional to 29,130.48, 40,183.83 and 20,183.22 is: 27,841.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,130.48 : 40,183.83 = 20,183.22 : x
  2. Step 2: Convert to fraction form
    29,130.48/40,183.83 = 20,183.22/x
  3. Step 3: Cross multiply
    29,130.48x = 40,183.83 × 20,183.22
  4. Step 4: Simplify right side
    29,130.48x = 811,039,081.33
  5. Step 5: Solve for x
    x = 811,039,081.33/29,130.48
  6. Step 6: Final answer
    x = 27,841.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.