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Finding the Fourth Proportional to 12,676.87, 19,009.86 and 4,357.70

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Solution

The fourth proportional to 12,676.87, 19,009.86 and 4,357.70 is: 6,534.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,676.87 : 19,009.86 = 4,357.70 : x
  2. Step 2: Convert to fraction form
    12,676.87/19,009.86 = 4,357.70/x
  3. Step 3: Cross multiply
    12,676.87x = 19,009.86 × 4,357.70
  4. Step 4: Simplify right side
    12,676.87x = 82,839,266.92
  5. Step 5: Solve for x
    x = 82,839,266.92/12,676.87
  6. Step 6: Final answer
    x = 6,534.68

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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.