Home / 38,515.10-53,145.55-21,517.23

Finding the Fourth Proportional to 38,515.10, 53,145.55 and 21,517.23

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Solution

The fourth proportional to 38,515.10, 53,145.55 and 21,517.23 is: 29,690.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,515.10 : 53,145.55 = 21,517.23 : x
  2. Step 2: Convert to fraction form
    38,515.10/53,145.55 = 21,517.23/x
  3. Step 3: Cross multiply
    38,515.10x = 53,145.55 × 21,517.23
  4. Step 4: Simplify right side
    38,515.10x = 1,143,545,249.02
  5. Step 5: Solve for x
    x = 1,143,545,249.02/38,515.10
  6. Step 6: Final answer
    x = 29,690.83

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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.