Home / 12,912.58-19,357.53-8,520.76

Finding the Fourth Proportional to 12,912.58, 19,357.53 and 8,520.76

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Solution

The fourth proportional to 12,912.58, 19,357.53 and 8,520.76 is: 12,773.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.58 : 19,357.53 = 8,520.76 : x
  2. Step 2: Convert to fraction form
    12,912.58/19,357.53 = 8,520.76/x
  3. Step 3: Cross multiply
    12,912.58x = 19,357.53 × 8,520.76
  4. Step 4: Simplify right side
    12,912.58x = 164,940,867.32
  5. Step 5: Solve for x
    x = 164,940,867.32/12,912.58
  6. Step 6: Final answer
    x = 12,773.66

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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.