Home / 12,855.24-19,285.29-8,704.80

Finding the Fourth Proportional to 12,855.24, 19,285.29 and 8,704.80

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Solution

The fourth proportional to 12,855.24, 19,285.29 and 8,704.80 is: 13,058.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855.24 : 19,285.29 = 8,704.80 : x
  2. Step 2: Convert to fraction form
    12,855.24/19,285.29 = 8,704.80/x
  3. Step 3: Cross multiply
    12,855.24x = 19,285.29 × 8,704.80
  4. Step 4: Simplify right side
    12,855.24x = 167,874,592.39
  5. Step 5: Solve for x
    x = 167,874,592.39/12,855.24
  6. Step 6: Final answer
    x = 13,058.85

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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.