Home / 21,170.54-31,744.46-7,125.90

Finding the Fourth Proportional to 21,170.54, 31,744.46 and 7,125.90

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Solution

The fourth proportional to 21,170.54, 31,744.46 and 7,125.90 is: 10,685.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.54 : 31,744.46 = 7,125.90 : x
  2. Step 2: Convert to fraction form
    21,170.54/31,744.46 = 7,125.90/x
  3. Step 3: Cross multiply
    21,170.54x = 31,744.46 × 7,125.90
  4. Step 4: Simplify right side
    21,170.54x = 226,207,847.51
  5. Step 5: Solve for x
    x = 226,207,847.51/21,170.54
  6. Step 6: Final answer
    x = 10,685.03

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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.