Home / 11,720.20-16,174.14-6,415.24

Finding the Fourth Proportional to 11,720.20, 16,174.14 and 6,415.24

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Solution

The fourth proportional to 11,720.20, 16,174.14 and 6,415.24 is: 8,853.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.20 : 16,174.14 = 6,415.24 : x
  2. Step 2: Convert to fraction form
    11,720.20/16,174.14 = 6,415.24/x
  3. Step 3: Cross multiply
    11,720.20x = 16,174.14 × 6,415.24
  4. Step 4: Simplify right side
    11,720.20x = 103,760,989.89
  5. Step 5: Solve for x
    x = 103,760,989.89/11,720.20
  6. Step 6: Final answer
    x = 8,853.18

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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.