Home / 11,317.05-16,980.21-5,072.87

Finding the Fourth Proportional to 11,317.05, 16,980.21 and 5,072.87

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Solution

The fourth proportional to 11,317.05, 16,980.21 and 5,072.87 is: 7,611.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,317.05 : 16,980.21 = 5,072.87 : x
  2. Step 2: Convert to fraction form
    11,317.05/16,980.21 = 5,072.87/x
  3. Step 3: Cross multiply
    11,317.05x = 16,980.21 × 5,072.87
  4. Step 4: Simplify right side
    11,317.05x = 86,138,397.90
  5. Step 5: Solve for x
    x = 86,138,397.90/11,317.05
  6. Step 6: Final answer
    x = 7,611.38

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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.