Home / 20,865.88-31,301.34-7,015.24

Finding the Fourth Proportional to 20,865.88, 31,301.34 and 7,015.24

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Solution

The fourth proportional to 20,865.88, 31,301.34 and 7,015.24 is: 10,523.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.88 : 31,301.34 = 7,015.24 : x
  2. Step 2: Convert to fraction form
    20,865.88/31,301.34 = 7,015.24/x
  3. Step 3: Cross multiply
    20,865.88x = 31,301.34 × 7,015.24
  4. Step 4: Simplify right side
    20,865.88x = 219,586,412.42
  5. Step 5: Solve for x
    x = 219,586,412.42/20,865.88
  6. Step 6: Final answer
    x = 10,523.71

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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.