Home / 19,755.79-27,255.35-12,188.97

Finding the Fourth Proportional to 19,755.79, 27,255.35 and 12,188.97

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Solution

The fourth proportional to 19,755.79, 27,255.35 and 12,188.97 is: 16,816.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,755.79 : 27,255.35 = 12,188.97 : x
  2. Step 2: Convert to fraction form
    19,755.79/27,255.35 = 12,188.97/x
  3. Step 3: Cross multiply
    19,755.79x = 27,255.35 × 12,188.97
  4. Step 4: Simplify right side
    19,755.79x = 332,214,643.49
  5. Step 5: Solve for x
    x = 332,214,643.49/19,755.79
  6. Step 6: Final answer
    x = 16,816.06

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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.