Home / 11,720.23-16,174.01-6,415.09

Finding the Fourth Proportional to 11,720.23, 16,174.01 and 6,415.09

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Solution

The fourth proportional to 11,720.23, 16,174.01 and 6,415.09 is: 8,852.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.23 : 16,174.01 = 6,415.09 : x
  2. Step 2: Convert to fraction form
    11,720.23/16,174.01 = 6,415.09/x
  3. Step 3: Cross multiply
    11,720.23x = 16,174.01 × 6,415.09
  4. Step 4: Simplify right side
    11,720.23x = 103,757,729.81
  5. Step 5: Solve for x
    x = 103,757,729.81/11,720.23
  6. Step 6: Final answer
    x = 8,852.87

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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.