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Finding the Fourth Proportional to 20,070.55, 27,696.17 and 10,994.10

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Solution

The fourth proportional to 20,070.55, 27,696.17 and 10,994.10 is: 15,171.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.55 : 27,696.17 = 10,994.10 : x
  2. Step 2: Convert to fraction form
    20,070.55/27,696.17 = 10,994.10/x
  3. Step 3: Cross multiply
    20,070.55x = 27,696.17 × 10,994.10
  4. Step 4: Simplify right side
    20,070.55x = 304,494,504.35
  5. Step 5: Solve for x
    x = 304,494,504.35/20,070.55
  6. Step 6: Final answer
    x = 15,171.21

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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.