Home / 11,720.53-16,174.69-6,415.71

Finding the Fourth Proportional to 11,720.53, 16,174.69 and 6,415.71

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Solution

The fourth proportional to 11,720.53, 16,174.69 and 6,415.71 is: 8,853.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.53 : 16,174.69 = 6,415.71 : x
  2. Step 2: Convert to fraction form
    11,720.53/16,174.69 = 6,415.71/x
  3. Step 3: Cross multiply
    11,720.53x = 16,174.69 × 6,415.71
  4. Step 4: Simplify right side
    11,720.53x = 103,772,043.69
  5. Step 5: Solve for x
    x = 103,772,043.69/11,720.53
  6. Step 6: Final answer
    x = 8,853.87

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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.