Home / 12,440.21-18,645.52-8,671.62

Finding the Fourth Proportional to 12,440.21, 18,645.52 and 8,671.62

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Solution

The fourth proportional to 12,440.21, 18,645.52 and 8,671.62 is: 12,997.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.21 : 18,645.52 = 8,671.62 : x
  2. Step 2: Convert to fraction form
    12,440.21/18,645.52 = 8,671.62/x
  3. Step 3: Cross multiply
    12,440.21x = 18,645.52 × 8,671.62
  4. Step 4: Simplify right side
    12,440.21x = 161,686,727.56
  5. Step 5: Solve for x
    x = 161,686,727.56/12,440.21
  6. Step 6: Final answer
    x = 12,997.11

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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.