Home / 10,121.45-13,967.62-5,645.09

Finding the Fourth Proportional to 10,121.45, 13,967.62 and 5,645.09

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Solution

The fourth proportional to 10,121.45, 13,967.62 and 5,645.09 is: 7,790.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.45 : 13,967.62 = 5,645.09 : x
  2. Step 2: Convert to fraction form
    10,121.45/13,967.62 = 5,645.09/x
  3. Step 3: Cross multiply
    10,121.45x = 13,967.62 × 5,645.09
  4. Step 4: Simplify right side
    10,121.45x = 78,848,445.98
  5. Step 5: Solve for x
    x = 78,848,445.98/10,121.45
  6. Step 6: Final answer
    x = 7,790.23

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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.