Home / 12,630.61-18,951.38-6,780.38

Finding the Fourth Proportional to 12,630.61, 18,951.38 and 6,780.38

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Solution

The fourth proportional to 12,630.61, 18,951.38 and 6,780.38 is: 10,173.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.61 : 18,951.38 = 6,780.38 : x
  2. Step 2: Convert to fraction form
    12,630.61/18,951.38 = 6,780.38/x
  3. Step 3: Cross multiply
    12,630.61x = 18,951.38 × 6,780.38
  4. Step 4: Simplify right side
    12,630.61x = 128,497,624.13
  5. Step 5: Solve for x
    x = 128,497,624.13/12,630.61
  6. Step 6: Final answer
    x = 10,173.51

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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.