Home / 12,529.60-18,772.80-8,144.80

Finding the Fourth Proportional to 12,529.60, 18,772.80 and 8,144.80

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Solution

The fourth proportional to 12,529.60, 18,772.80 and 8,144.80 is: 12,203.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,529.60 : 18,772.80 = 8,144.80 : x
  2. Step 2: Convert to fraction form
    12,529.60/18,772.80 = 8,144.80/x
  3. Step 3: Cross multiply
    12,529.60x = 18,772.80 × 8,144.80
  4. Step 4: Simplify right side
    12,529.60x = 152,900,701.44
  5. Step 5: Solve for x
    x = 152,900,701.44/12,529.60
  6. Step 6: Final answer
    x = 12,203.16

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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.