Home / 12,919.68-19,380.12-4,599.76

Finding the Fourth Proportional to 12,919.68, 19,380.12 and 4,599.76

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Solution

The fourth proportional to 12,919.68, 19,380.12 and 4,599.76 is: 6,899.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.68 : 19,380.12 = 4,599.76 : x
  2. Step 2: Convert to fraction form
    12,919.68/19,380.12 = 4,599.76/x
  3. Step 3: Cross multiply
    12,919.68x = 19,380.12 × 4,599.76
  4. Step 4: Simplify right side
    12,919.68x = 89,143,900.77
  5. Step 5: Solve for x
    x = 89,143,900.77/12,919.68
  6. Step 6: Final answer
    x = 6,899.85

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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.