Home / 12,140.94-18,228.18-8,383.91

Finding the Fourth Proportional to 12,140.94, 18,228.18 and 8,383.91

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Solution

The fourth proportional to 12,140.94, 18,228.18 and 8,383.91 is: 12,587.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.94 : 18,228.18 = 8,383.91 : x
  2. Step 2: Convert to fraction form
    12,140.94/18,228.18 = 8,383.91/x
  3. Step 3: Cross multiply
    12,140.94x = 18,228.18 × 8,383.91
  4. Step 4: Simplify right side
    12,140.94x = 152,823,360.88
  5. Step 5: Solve for x
    x = 152,823,360.88/12,140.94
  6. Step 6: Final answer
    x = 12,587.44

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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.