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Finding the Fourth Proportional to 19,910.70, 27,476.01 and 10,957.70

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Solution

The fourth proportional to 19,910.70, 27,476.01 and 10,957.70 is: 15,121.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,910.70 : 27,476.01 = 10,957.70 : x
  2. Step 2: Convert to fraction form
    19,910.70/27,476.01 = 10,957.70/x
  3. Step 3: Cross multiply
    19,910.70x = 27,476.01 × 10,957.70
  4. Step 4: Simplify right side
    19,910.70x = 301,073,943.47
  5. Step 5: Solve for x
    x = 301,073,943.47/19,910.70
  6. Step 6: Final answer
    x = 15,121.21

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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.