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Finding the Fourth Proportional to 18,658.59, 25,729.12 and 14,410.34

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Solution

The fourth proportional to 18,658.59, 25,729.12 and 14,410.34 is: 19,871.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.59 : 25,729.12 = 14,410.34 : x
  2. Step 2: Convert to fraction form
    18,658.59/25,729.12 = 14,410.34/x
  3. Step 3: Cross multiply
    18,658.59x = 25,729.12 × 14,410.34
  4. Step 4: Simplify right side
    18,658.59x = 370,765,367.10
  5. Step 5: Solve for x
    x = 370,765,367.10/18,658.59
  6. Step 6: Final answer
    x = 19,871.03

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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.