Home / 21,908.98-30,227.43-12,959.56

Finding the Fourth Proportional to 21,908.98, 30,227.43 and 12,959.56

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Solution

The fourth proportional to 21,908.98, 30,227.43 and 12,959.56 is: 17,880.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.98 : 30,227.43 = 12,959.56 : x
  2. Step 2: Convert to fraction form
    21,908.98/30,227.43 = 12,959.56/x
  3. Step 3: Cross multiply
    21,908.98x = 30,227.43 × 12,959.56
  4. Step 4: Simplify right side
    21,908.98x = 391,734,192.73
  5. Step 5: Solve for x
    x = 391,734,192.73/21,908.98
  6. Step 6: Final answer
    x = 17,880.07

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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.