Home / 12,620.46-18,951.68-7,887.58

Finding the Fourth Proportional to 12,620.46, 18,951.68 and 7,887.58

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Solution

The fourth proportional to 12,620.46, 18,951.68 and 7,887.58 is: 11,844.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,620.46 : 18,951.68 = 7,887.58 : x
  2. Step 2: Convert to fraction form
    12,620.46/18,951.68 = 7,887.58/x
  3. Step 3: Cross multiply
    12,620.46x = 18,951.68 × 7,887.58
  4. Step 4: Simplify right side
    12,620.46x = 149,482,892.13
  5. Step 5: Solve for x
    x = 149,482,892.13/12,620.46
  6. Step 6: Final answer
    x = 11,844.49

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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.