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Finding the Fourth Proportional to 12,748.91, 17,591.47 and 7,369.35

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Solution

The fourth proportional to 12,748.91, 17,591.47 and 7,369.35 is: 10,168.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,748.91 : 17,591.47 = 7,369.35 : x
  2. Step 2: Convert to fraction form
    12,748.91/17,591.47 = 7,369.35/x
  3. Step 3: Cross multiply
    12,748.91x = 17,591.47 × 7,369.35
  4. Step 4: Simplify right side
    12,748.91x = 129,637,699.44
  5. Step 5: Solve for x
    x = 129,637,699.44/12,748.91
  6. Step 6: Final answer
    x = 10,168.53

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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.