Home / 15,821.70-21,839.13-11,107.14

Finding the Fourth Proportional to 15,821.70, 21,839.13 and 11,107.14

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Solution

The fourth proportional to 15,821.70, 21,839.13 and 11,107.14 is: 15,331.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.70 : 21,839.13 = 11,107.14 : x
  2. Step 2: Convert to fraction form
    15,821.70/21,839.13 = 11,107.14/x
  3. Step 3: Cross multiply
    15,821.70x = 21,839.13 × 11,107.14
  4. Step 4: Simplify right side
    15,821.70x = 242,570,274.39
  5. Step 5: Solve for x
    x = 242,570,274.39/15,821.70
  6. Step 6: Final answer
    x = 15,331.49

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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.