Home / 12,121.74-18,182.97-4,725.90

Finding the Fourth Proportional to 12,121.74, 18,182.97 and 4,725.90

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Solution

The fourth proportional to 12,121.74, 18,182.97 and 4,725.90 is: 7,088.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.74 : 18,182.97 = 4,725.90 : x
  2. Step 2: Convert to fraction form
    12,121.74/18,182.97 = 4,725.90/x
  3. Step 3: Cross multiply
    12,121.74x = 18,182.97 × 4,725.90
  4. Step 4: Simplify right side
    12,121.74x = 85,930,897.92
  5. Step 5: Solve for x
    x = 85,930,897.92/12,121.74
  6. Step 6: Final answer
    x = 7,088.99

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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.