Home / 12,917.12-19,376.15-3,557.86

Finding the Fourth Proportional to 12,917.12, 19,376.15 and 3,557.86

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Solution

The fourth proportional to 12,917.12, 19,376.15 and 3,557.86 is: 5,336.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,917.12 : 19,376.15 = 3,557.86 : x
  2. Step 2: Convert to fraction form
    12,917.12/19,376.15 = 3,557.86/x
  3. Step 3: Cross multiply
    12,917.12x = 19,376.15 × 3,557.86
  4. Step 4: Simplify right side
    12,917.12x = 68,937,629.04
  5. Step 5: Solve for x
    x = 68,937,629.04/12,917.12
  6. Step 6: Final answer
    x = 5,336.92

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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.