Home / 20,133.18-27,784.23-11,180.55

Finding the Fourth Proportional to 20,133.18, 27,784.23 and 11,180.55

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Solution

The fourth proportional to 20,133.18, 27,784.23 and 11,180.55 is: 15,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.18 : 27,784.23 = 11,180.55 : x
  2. Step 2: Convert to fraction form
    20,133.18/27,784.23 = 11,180.55/x
  3. Step 3: Cross multiply
    20,133.18x = 27,784.23 × 11,180.55
  4. Step 4: Simplify right side
    20,133.18x = 310,642,972.73
  5. Step 5: Solve for x
    x = 310,642,972.73/20,133.18
  6. Step 6: Final answer
    x = 15,429.40

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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.