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Finding the Fourth Proportional to 18,745.40, 25,872 and 14,262.32

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Solution

The fourth proportional to 18,745.40, 25,872 and 14,262.32 is: 19,684.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,745.40 : 25,872 = 14,262.32 : x
  2. Step 2: Convert to fraction form
    18,745.40/25,872 = 14,262.32/x
  3. Step 3: Cross multiply
    18,745.40x = 25,872 × 14,262.32
  4. Step 4: Simplify right side
    18,745.40x = 368,994,743.04
  5. Step 5: Solve for x
    x = 368,994,743.04/18,745.40
  6. Step 6: Final answer
    x = 19,684.55

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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.