Home / 20,143.36-27,799.02-11,191.84

Finding the Fourth Proportional to 20,143.36, 27,799.02 and 11,191.84

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Solution

The fourth proportional to 20,143.36, 27,799.02 and 11,191.84 is: 15,445.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.36 : 27,799.02 = 11,191.84 : x
  2. Step 2: Convert to fraction form
    20,143.36/27,799.02 = 11,191.84/x
  3. Step 3: Cross multiply
    20,143.36x = 27,799.02 × 11,191.84
  4. Step 4: Simplify right side
    20,143.36x = 311,122,184.00
  5. Step 5: Solve for x
    x = 311,122,184.00/20,143.36
  6. Step 6: Final answer
    x = 15,445.40

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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.