Home / 12,817.21-19,216.26-8,645.53

Finding the Fourth Proportional to 12,817.21, 19,216.26 and 8,645.53

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Solution

The fourth proportional to 12,817.21, 19,216.26 and 8,645.53 is: 12,961.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,817.21 : 19,216.26 = 8,645.53 : x
  2. Step 2: Convert to fraction form
    12,817.21/19,216.26 = 8,645.53/x
  3. Step 3: Cross multiply
    12,817.21x = 19,216.26 × 8,645.53
  4. Step 4: Simplify right side
    12,817.21x = 166,134,752.32
  5. Step 5: Solve for x
    x = 166,134,752.32/12,817.21
  6. Step 6: Final answer
    x = 12,961.85

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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.