Home / 20,132.48-27,783.12-12,173.30

Finding the Fourth Proportional to 20,132.48, 27,783.12 and 12,173.30

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Solution

The fourth proportional to 20,132.48, 27,783.12 and 12,173.30 is: 16,799.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.48 : 27,783.12 = 12,173.30 : x
  2. Step 2: Convert to fraction form
    20,132.48/27,783.12 = 12,173.30/x
  3. Step 3: Cross multiply
    20,132.48x = 27,783.12 × 12,173.30
  4. Step 4: Simplify right side
    20,132.48x = 338,212,254.70
  5. Step 5: Solve for x
    x = 338,212,254.70/20,132.48
  6. Step 6: Final answer
    x = 16,799.33

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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.