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Finding the Fourth Proportional to 19,745.68, 29,630.22 and 7,274.47

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Solution

The fourth proportional to 19,745.68, 29,630.22 and 7,274.47 is: 10,916.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,745.68 : 29,630.22 = 7,274.47 : x
  2. Step 2: Convert to fraction form
    19,745.68/29,630.22 = 7,274.47/x
  3. Step 3: Cross multiply
    19,745.68x = 29,630.22 × 7,274.47
  4. Step 4: Simplify right side
    19,745.68x = 215,543,961.96
  5. Step 5: Solve for x
    x = 215,543,961.96/19,745.68
  6. Step 6: Final answer
    x = 10,916.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.