Home / 11,997.07-16,555.91-7,219.78

Finding the Fourth Proportional to 11,997.07, 16,555.91 and 7,219.78

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Solution

The fourth proportional to 11,997.07, 16,555.91 and 7,219.78 is: 9,963.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,997.07 : 16,555.91 = 7,219.78 : x
  2. Step 2: Convert to fraction form
    11,997.07/16,555.91 = 7,219.78/x
  3. Step 3: Cross multiply
    11,997.07x = 16,555.91 × 7,219.78
  4. Step 4: Simplify right side
    11,997.07x = 119,529,950.41
  5. Step 5: Solve for x
    x = 119,529,950.41/11,997.07
  6. Step 6: Final answer
    x = 9,963.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.