Home / 21,145.44-31,723.20-7,294.56

Finding the Fourth Proportional to 21,145.44, 31,723.20 and 7,294.56

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Solution

The fourth proportional to 21,145.44, 31,723.20 and 7,294.56 is: 10,943.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,145.44 : 31,723.20 = 7,294.56 : x
  2. Step 2: Convert to fraction form
    21,145.44/31,723.20 = 7,294.56/x
  3. Step 3: Cross multiply
    21,145.44x = 31,723.20 × 7,294.56
  4. Step 4: Simplify right side
    21,145.44x = 231,406,785.79
  5. Step 5: Solve for x
    x = 231,406,785.79/21,145.44
  6. Step 6: Final answer
    x = 10,943.58

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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.