Home / 20,889.01-31,317.08-10,351.79

Finding the Fourth Proportional to 20,889.01, 31,317.08 and 10,351.79

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Solution

The fourth proportional to 20,889.01, 31,317.08 and 10,351.79 is: 15,519.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889.01 : 31,317.08 = 10,351.79 : x
  2. Step 2: Convert to fraction form
    20,889.01/31,317.08 = 10,351.79/x
  3. Step 3: Cross multiply
    20,889.01x = 31,317.08 × 10,351.79
  4. Step 4: Simplify right side
    20,889.01x = 324,187,627.23
  5. Step 5: Solve for x
    x = 324,187,627.23/20,889.01
  6. Step 6: Final answer
    x = 15,519.53

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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.