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Finding the Fourth Proportional to 29,423.78, 40,614.10 and 18,813.46

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Solution

The fourth proportional to 29,423.78, 40,614.10 and 18,813.46 is: 25,968.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,423.78 : 40,614.10 = 18,813.46 : x
  2. Step 2: Convert to fraction form
    29,423.78/40,614.10 = 18,813.46/x
  3. Step 3: Cross multiply
    29,423.78x = 40,614.10 × 18,813.46
  4. Step 4: Simplify right side
    29,423.78x = 764,091,745.79
  5. Step 5: Solve for x
    x = 764,091,745.79/29,423.78
  6. Step 6: Final answer
    x = 25,968.51

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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.