Home / 12,579.24-18,874.80-8,905.08

Finding the Fourth Proportional to 12,579.24, 18,874.80 and 8,905.08

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Solution

The fourth proportional to 12,579.24, 18,874.80 and 8,905.08 is: 13,361.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.24 : 18,874.80 = 8,905.08 : x
  2. Step 2: Convert to fraction form
    12,579.24/18,874.80 = 8,905.08/x
  3. Step 3: Cross multiply
    12,579.24x = 18,874.80 × 8,905.08
  4. Step 4: Simplify right side
    12,579.24x = 168,081,603.98
  5. Step 5: Solve for x
    x = 168,081,603.98/12,579.24
  6. Step 6: Final answer
    x = 13,361.83

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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.