Home / 11,478.80-17,226.84-7,772.24

Finding the Fourth Proportional to 11,478.80, 17,226.84 and 7,772.24

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Solution

The fourth proportional to 11,478.80, 17,226.84 and 7,772.24 is: 11,664.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,478.80 : 17,226.84 = 7,772.24 : x
  2. Step 2: Convert to fraction form
    11,478.80/17,226.84 = 7,772.24/x
  3. Step 3: Cross multiply
    11,478.80x = 17,226.84 × 7,772.24
  4. Step 4: Simplify right side
    11,478.80x = 133,891,134.92
  5. Step 5: Solve for x
    x = 133,891,134.92/11,478.80
  6. Step 6: Final answer
    x = 11,664.21

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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.