Home / 22,415.47-30,964.78-21,234.49

Finding the Fourth Proportional to 22,415.47, 30,964.78 and 21,234.49

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Solution

The fourth proportional to 22,415.47, 30,964.78 and 21,234.49 is: 29,333.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,415.47 : 30,964.78 = 21,234.49 : x
  2. Step 2: Convert to fraction form
    22,415.47/30,964.78 = 21,234.49/x
  3. Step 3: Cross multiply
    22,415.47x = 30,964.78 × 21,234.49
  4. Step 4: Simplify right side
    22,415.47x = 657,521,260.39
  5. Step 5: Solve for x
    x = 657,521,260.39/22,415.47
  6. Step 6: Final answer
    x = 29,333.37

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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.