Home / 20,259.75-27,957.73-11,308.78

Finding the Fourth Proportional to 20,259.75, 27,957.73 and 11,308.78

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Solution

The fourth proportional to 20,259.75, 27,957.73 and 11,308.78 is: 15,605.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.75 : 27,957.73 = 11,308.78 : x
  2. Step 2: Convert to fraction form
    20,259.75/27,957.73 = 11,308.78/x
  3. Step 3: Cross multiply
    20,259.75x = 27,957.73 × 11,308.78
  4. Step 4: Simplify right side
    20,259.75x = 316,167,817.87
  5. Step 5: Solve for x
    x = 316,167,817.87/20,259.75
  6. Step 6: Final answer
    x = 15,605.71

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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.