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Finding the Fourth Proportional to 13,783.22, 19,024.22 and 7,818.38

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Solution

The fourth proportional to 13,783.22, 19,024.22 and 7,818.38 is: 10,791.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.22 : 19,024.22 = 7,818.38 : x
  2. Step 2: Convert to fraction form
    13,783.22/19,024.22 = 7,818.38/x
  3. Step 3: Cross multiply
    13,783.22x = 19,024.22 × 7,818.38
  4. Step 4: Simplify right side
    13,783.22x = 148,738,446.95
  5. Step 5: Solve for x
    x = 148,738,446.95/13,783.22
  6. Step 6: Final answer
    x = 10,791.27

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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.