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Finding the Fourth Proportional to 29,015.61, 40,026.80 and 18,949.94

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Solution

The fourth proportional to 29,015.61, 40,026.80 and 18,949.94 is: 26,141.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,015.61 : 40,026.80 = 18,949.94 : x
  2. Step 2: Convert to fraction form
    29,015.61/40,026.80 = 18,949.94/x
  3. Step 3: Cross multiply
    29,015.61x = 40,026.80 × 18,949.94
  4. Step 4: Simplify right side
    29,015.61x = 758,505,505.77
  5. Step 5: Solve for x
    x = 758,505,505.77/29,015.61
  6. Step 6: Final answer
    x = 26,141.29

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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.