Home / 19,685.73-27,166.82-12,137.05

Finding the Fourth Proportional to 19,685.73, 27,166.82 and 12,137.05

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Solution

The fourth proportional to 19,685.73, 27,166.82 and 12,137.05 is: 16,749.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,685.73 : 27,166.82 = 12,137.05 : x
  2. Step 2: Convert to fraction form
    19,685.73/27,166.82 = 12,137.05/x
  3. Step 3: Cross multiply
    19,685.73x = 27,166.82 × 12,137.05
  4. Step 4: Simplify right side
    19,685.73x = 329,725,052.68
  5. Step 5: Solve for x
    x = 329,725,052.68/19,685.73
  6. Step 6: Final answer
    x = 16,749.45

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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.