Home / 21,112.49-29,135.34-11,552.49

Finding the Fourth Proportional to 21,112.49, 29,135.34 and 11,552.49

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Solution

The fourth proportional to 21,112.49, 29,135.34 and 11,552.49 is: 15,942.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112.49 : 29,135.34 = 11,552.49 : x
  2. Step 2: Convert to fraction form
    21,112.49/29,135.34 = 11,552.49/x
  3. Step 3: Cross multiply
    21,112.49x = 29,135.34 × 11,552.49
  4. Step 4: Simplify right side
    21,112.49x = 336,585,724.00
  5. Step 5: Solve for x
    x = 336,585,724.00/21,112.49
  6. Step 6: Final answer
    x = 15,942.50

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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.