Home / 12,772.15-19,160.21-5,378.69

Finding the Fourth Proportional to 12,772.15, 19,160.21 and 5,378.69

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Solution

The fourth proportional to 12,772.15, 19,160.21 and 5,378.69 is: 8,068.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,772.15 : 19,160.21 = 5,378.69 : x
  2. Step 2: Convert to fraction form
    12,772.15/19,160.21 = 5,378.69/x
  3. Step 3: Cross multiply
    12,772.15x = 19,160.21 × 5,378.69
  4. Step 4: Simplify right side
    12,772.15x = 103,056,891.27
  5. Step 5: Solve for x
    x = 103,056,891.27/12,772.15
  6. Step 6: Final answer
    x = 8,068.88

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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.