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Finding the Fourth Proportional to 13,791.56, 19,031.78 and 7,503.94

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Solution

The fourth proportional to 13,791.56, 19,031.78 and 7,503.94 is: 10,355.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,791.56 : 19,031.78 = 7,503.94 : x
  2. Step 2: Convert to fraction form
    13,791.56/19,031.78 = 7,503.94/x
  3. Step 3: Cross multiply
    13,791.56x = 19,031.78 × 7,503.94
  4. Step 4: Simplify right side
    13,791.56x = 142,813,335.21
  5. Step 5: Solve for x
    x = 142,813,335.21/13,791.56
  6. Step 6: Final answer
    x = 10,355.13

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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.