Home / 20,100.65-27,736.93-11,147.95

Finding the Fourth Proportional to 20,100.65, 27,736.93 and 11,147.95

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Solution

The fourth proportional to 20,100.65, 27,736.93 and 11,147.95 is: 15,383.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.65 : 27,736.93 = 11,147.95 : x
  2. Step 2: Convert to fraction form
    20,100.65/27,736.93 = 11,147.95/x
  3. Step 3: Cross multiply
    20,100.65x = 27,736.93 × 11,147.95
  4. Step 4: Simplify right side
    20,100.65x = 309,209,957.40
  5. Step 5: Solve for x
    x = 309,209,957.40/20,100.65
  6. Step 6: Final answer
    x = 15,383.09

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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.