Home / 20,278.48-27,982.08-11,783.44

Finding the Fourth Proportional to 20,278.48, 27,982.08 and 11,783.44

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Solution

The fourth proportional to 20,278.48, 27,982.08 and 11,783.44 is: 16,259.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.48 : 27,982.08 = 11,783.44 : x
  2. Step 2: Convert to fraction form
    20,278.48/27,982.08 = 11,783.44/x
  3. Step 3: Cross multiply
    20,278.48x = 27,982.08 × 11,783.44
  4. Step 4: Simplify right side
    20,278.48x = 329,725,160.76
  5. Step 5: Solve for x
    x = 329,725,160.76/20,278.48
  6. Step 6: Final answer
    x = 16,259.86

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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.