Home / 12,917.48-19,376.20-3,557.56

Finding the Fourth Proportional to 12,917.48, 19,376.20 and 3,557.56

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Solution

The fourth proportional to 12,917.48, 19,376.20 and 3,557.56 is: 5,336.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,917.48 : 19,376.20 = 3,557.56 : x
  2. Step 2: Convert to fraction form
    12,917.48/19,376.20 = 3,557.56/x
  3. Step 3: Cross multiply
    12,917.48x = 19,376.20 × 3,557.56
  4. Step 4: Simplify right side
    12,917.48x = 68,931,879.40
  5. Step 5: Solve for x
    x = 68,931,879.40/12,917.48
  6. Step 6: Final answer
    x = 5,336.33

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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.