Home / 20,132.40-27,783.42-11,180.07

Finding the Fourth Proportional to 20,132.40, 27,783.42 and 11,180.07

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Solution

The fourth proportional to 20,132.40, 27,783.42 and 11,180.07 is: 15,428.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.40 : 27,783.42 = 11,180.07 : x
  2. Step 2: Convert to fraction form
    20,132.40/27,783.42 = 11,180.07/x
  3. Step 3: Cross multiply
    20,132.40x = 27,783.42 × 11,180.07
  4. Step 4: Simplify right side
    20,132.40x = 310,620,580.44
  5. Step 5: Solve for x
    x = 310,620,580.44/20,132.40
  6. Step 6: Final answer
    x = 15,428.89

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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.