Home / 18,870.17-28,305.25-8,469.77

Finding the Fourth Proportional to 18,870.17, 28,305.25 and 8,469.77

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Solution

The fourth proportional to 18,870.17, 28,305.25 and 8,469.77 is: 12,704.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.17 : 28,305.25 = 8,469.77 : x
  2. Step 2: Convert to fraction form
    18,870.17/28,305.25 = 8,469.77/x
  3. Step 3: Cross multiply
    18,870.17x = 28,305.25 × 8,469.77
  4. Step 4: Simplify right side
    18,870.17x = 239,738,794.59
  5. Step 5: Solve for x
    x = 239,738,794.59/18,870.17
  6. Step 6: Final answer
    x = 12,704.65

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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.