Home / 20,324.64-28,045.31-11,371.17

Finding the Fourth Proportional to 20,324.64, 28,045.31 and 11,371.17

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Solution

The fourth proportional to 20,324.64, 28,045.31 and 11,371.17 is: 15,690.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,324.64 : 28,045.31 = 11,371.17 : x
  2. Step 2: Convert to fraction form
    20,324.64/28,045.31 = 11,371.17/x
  3. Step 3: Cross multiply
    20,324.64x = 28,045.31 × 11,371.17
  4. Step 4: Simplify right side
    20,324.64x = 318,907,987.71
  5. Step 5: Solve for x
    x = 318,907,987.71/20,324.64
  6. Step 6: Final answer
    x = 15,690.71

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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.