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Finding the Fourth Proportional to 22,449.51, 30,980.14 and 12,240.51

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Solution

The fourth proportional to 22,449.51, 30,980.14 and 12,240.51 is: 16,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,449.51 : 30,980.14 = 12,240.51 : x
  2. Step 2: Convert to fraction form
    22,449.51/30,980.14 = 12,240.51/x
  3. Step 3: Cross multiply
    22,449.51x = 30,980.14 × 12,240.51
  4. Step 4: Simplify right side
    22,449.51x = 379,212,713.47
  5. Step 5: Solve for x
    x = 379,212,713.47/22,449.51
  6. Step 6: Final answer
    x = 16,891.80

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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.