Home / 19,738.89-27,245.16-12,186.45

Finding the Fourth Proportional to 19,738.89, 27,245.16 and 12,186.45

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Solution

The fourth proportional to 19,738.89, 27,245.16 and 12,186.45 is: 16,820.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,738.89 : 27,245.16 = 12,186.45 : x
  2. Step 2: Convert to fraction form
    19,738.89/27,245.16 = 12,186.45/x
  3. Step 3: Cross multiply
    19,738.89x = 27,245.16 × 12,186.45
  4. Step 4: Simplify right side
    19,738.89x = 332,021,780.08
  5. Step 5: Solve for x
    x = 332,021,780.08/19,738.89
  6. Step 6: Final answer
    x = 16,820.69

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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.