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Finding the Fourth Proportional to 13,791.25, 19,031.97 and 7,503.63

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Solution

The fourth proportional to 13,791.25, 19,031.97 and 7,503.63 is: 10,355.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,791.25 : 19,031.97 = 7,503.63 : x
  2. Step 2: Convert to fraction form
    13,791.25/19,031.97 = 7,503.63/x
  3. Step 3: Cross multiply
    13,791.25x = 19,031.97 × 7,503.63
  4. Step 4: Simplify right side
    13,791.25x = 142,808,861.05
  5. Step 5: Solve for x
    x = 142,808,861.05/13,791.25
  6. Step 6: Final answer
    x = 10,355.03

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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.