Home / 20,644.24-28,497.77-13,938.94

Finding the Fourth Proportional to 20,644.24, 28,497.77 and 13,938.94

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Solution

The fourth proportional to 20,644.24, 28,497.77 and 13,938.94 is: 19,241.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644.24 : 28,497.77 = 13,938.94 : x
  2. Step 2: Convert to fraction form
    20,644.24/28,497.77 = 13,938.94/x
  3. Step 3: Cross multiply
    20,644.24x = 28,497.77 × 13,938.94
  4. Step 4: Simplify right side
    20,644.24x = 397,228,636.47
  5. Step 5: Solve for x
    x = 397,228,636.47/20,644.24
  6. Step 6: Final answer
    x = 19,241.62

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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.