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Finding the Fourth Proportional to 29,995.56, 41,403.78 and 18,821.16

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Solution

The fourth proportional to 29,995.56, 41,403.78 and 18,821.16 is: 25,979.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,995.56 : 41,403.78 = 18,821.16 : x
  2. Step 2: Convert to fraction form
    29,995.56/41,403.78 = 18,821.16/x
  3. Step 3: Cross multiply
    29,995.56x = 41,403.78 × 18,821.16
  4. Step 4: Simplify right side
    29,995.56x = 779,267,167.98
  5. Step 5: Solve for x
    x = 779,267,167.98/29,995.56
  6. Step 6: Final answer
    x = 25,979.42

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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.