Home / 16,859.20-25,288.80-12,169.30

Finding the Fourth Proportional to 16,859.20, 25,288.80 and 12,169.30

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Solution

The fourth proportional to 16,859.20, 25,288.80 and 12,169.30 is: 18,253.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,859.20 : 25,288.80 = 12,169.30 : x
  2. Step 2: Convert to fraction form
    16,859.20/25,288.80 = 12,169.30/x
  3. Step 3: Cross multiply
    16,859.20x = 25,288.80 × 12,169.30
  4. Step 4: Simplify right side
    16,859.20x = 307,746,993.84
  5. Step 5: Solve for x
    x = 307,746,993.84/16,859.20
  6. Step 6: Final answer
    x = 18,253.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.