Home / 21,943.69-30,282.83-12,512.41

Finding the Fourth Proportional to 21,943.69, 30,282.83 and 12,512.41

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Solution

The fourth proportional to 21,943.69, 30,282.83 and 12,512.41 is: 17,267.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,943.69 : 30,282.83 = 12,512.41 : x
  2. Step 2: Convert to fraction form
    21,943.69/30,282.83 = 12,512.41/x
  3. Step 3: Cross multiply
    21,943.69x = 30,282.83 × 12,512.41
  4. Step 4: Simplify right side
    21,943.69x = 378,911,122.36
  5. Step 5: Solve for x
    x = 378,911,122.36/21,943.69
  6. Step 6: Final answer
    x = 17,267.43

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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.