Home / 18,709.20-25,811.92-14,403.61

Finding the Fourth Proportional to 18,709.20, 25,811.92 and 14,403.61

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Solution

The fourth proportional to 18,709.20, 25,811.92 and 14,403.61 is: 19,871.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.20 : 25,811.92 = 14,403.61 : x
  2. Step 2: Convert to fraction form
    18,709.20/25,811.92 = 14,403.61/x
  3. Step 3: Cross multiply
    18,709.20x = 25,811.92 × 14,403.61
  4. Step 4: Simplify right side
    18,709.20x = 371,784,653.09
  5. Step 5: Solve for x
    x = 371,784,653.09/18,709.20
  6. Step 6: Final answer
    x = 19,871.75

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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.