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Finding the Fourth Proportional to 20,193.54, 27,867.70 and 10,995.70

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Solution

The fourth proportional to 20,193.54, 27,867.70 and 10,995.70 is: 15,174.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,193.54 : 27,867.70 = 10,995.70 : x
  2. Step 2: Convert to fraction form
    20,193.54/27,867.70 = 10,995.70/x
  3. Step 3: Cross multiply
    20,193.54x = 27,867.70 × 10,995.70
  4. Step 4: Simplify right side
    20,193.54x = 306,424,868.89
  5. Step 5: Solve for x
    x = 306,424,868.89/20,193.54
  6. Step 6: Final answer
    x = 15,174.40

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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.