Home / 12,011.97-18,008.62-7,786.30

Finding the Fourth Proportional to 12,011.97, 18,008.62 and 7,786.30

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Solution

The fourth proportional to 12,011.97, 18,008.62 and 7,786.30 is: 11,673.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,011.97 : 18,008.62 = 7,786.30 : x
  2. Step 2: Convert to fraction form
    12,011.97/18,008.62 = 7,786.30/x
  3. Step 3: Cross multiply
    12,011.97x = 18,008.62 × 7,786.30
  4. Step 4: Simplify right side
    12,011.97x = 140,220,550.15
  5. Step 5: Solve for x
    x = 140,220,550.15/12,011.97
  6. Step 6: Final answer
    x = 11,673.40

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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.