Home / 12,910.92-19,374.57-5,515.43

Finding the Fourth Proportional to 12,910.92, 19,374.57 and 5,515.43

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Solution

The fourth proportional to 12,910.92, 19,374.57 and 5,515.43 is: 8,276.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,910.92 : 19,374.57 = 5,515.43 : x
  2. Step 2: Convert to fraction form
    12,910.92/19,374.57 = 5,515.43/x
  3. Step 3: Cross multiply
    12,910.92x = 19,374.57 × 5,515.43
  4. Step 4: Simplify right side
    12,910.92x = 106,859,039.71
  5. Step 5: Solve for x
    x = 106,859,039.71/12,910.92
  6. Step 6: Final answer
    x = 8,276.64

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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.