Home / 12,623.18-17,429.18-8,149.55

Finding the Fourth Proportional to 12,623.18, 17,429.18 and 8,149.55

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Solution

The fourth proportional to 12,623.18, 17,429.18 and 8,149.55 is: 11,252.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,623.18 : 17,429.18 = 8,149.55 : x
  2. Step 2: Convert to fraction form
    12,623.18/17,429.18 = 8,149.55/x
  3. Step 3: Cross multiply
    12,623.18x = 17,429.18 × 8,149.55
  4. Step 4: Simplify right side
    12,623.18x = 142,039,845.98
  5. Step 5: Solve for x
    x = 142,039,845.98/12,623.18
  6. Step 6: Final answer
    x = 11,252.31

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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.