Home / 20,125.79-27,774.48-11,173.41

Finding the Fourth Proportional to 20,125.79, 27,774.48 and 11,173.41

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Solution

The fourth proportional to 20,125.79, 27,774.48 and 11,173.41 is: 15,419.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.79 : 27,774.48 = 11,173.41 : x
  2. Step 2: Convert to fraction form
    20,125.79/27,774.48 = 11,173.41/x
  3. Step 3: Cross multiply
    20,125.79x = 27,774.48 × 11,173.41
  4. Step 4: Simplify right side
    20,125.79x = 310,335,652.58
  5. Step 5: Solve for x
    x = 310,335,652.58/20,125.79
  6. Step 6: Final answer
    x = 15,419.80

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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.