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Finding the Fourth Proportional to 19,500.50, 26,911.06 and 13,921.22

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Solution

The fourth proportional to 19,500.50, 26,911.06 and 13,921.22 is: 19,211.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,500.50 : 26,911.06 = 13,921.22 : x
  2. Step 2: Convert to fraction form
    19,500.50/26,911.06 = 13,921.22/x
  3. Step 3: Cross multiply
    19,500.50x = 26,911.06 × 13,921.22
  4. Step 4: Simplify right side
    19,500.50x = 374,634,786.69
  5. Step 5: Solve for x
    x = 374,634,786.69/19,500.50
  6. Step 6: Final answer
    x = 19,211.55

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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.