Home / 12,188.30-18,282.45-8,907.80

Finding the Fourth Proportional to 12,188.30, 18,282.45 and 8,907.80

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Solution

The fourth proportional to 12,188.30, 18,282.45 and 8,907.80 is: 13,361.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.30 : 18,282.45 = 8,907.80 : x
  2. Step 2: Convert to fraction form
    12,188.30/18,282.45 = 8,907.80/x
  3. Step 3: Cross multiply
    12,188.30x = 18,282.45 × 8,907.80
  4. Step 4: Simplify right side
    12,188.30x = 162,856,408.11
  5. Step 5: Solve for x
    x = 162,856,408.11/12,188.30
  6. Step 6: Final answer
    x = 13,361.70

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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.