Home / 20,133.35-27,784.30-11,181.43

Finding the Fourth Proportional to 20,133.35, 27,784.30 and 11,181.43

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Solution

The fourth proportional to 20,133.35, 27,784.30 and 11,181.43 is: 15,430.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.35 : 27,784.30 = 11,181.43 : x
  2. Step 2: Convert to fraction form
    20,133.35/27,784.30 = 11,181.43/x
  3. Step 3: Cross multiply
    20,133.35x = 27,784.30 × 11,181.43
  4. Step 4: Simplify right side
    20,133.35x = 310,668,205.55
  5. Step 5: Solve for x
    x = 310,668,205.55/20,133.35
  6. Step 6: Final answer
    x = 15,430.53

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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.