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Finding the Fourth Proportional to 19,745.55, 29,630.04 and 7,274.34

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Solution

The fourth proportional to 19,745.55, 29,630.04 and 7,274.34 is: 10,915.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,745.55 : 29,630.04 = 7,274.34 : x
  2. Step 2: Convert to fraction form
    19,745.55/29,630.04 = 7,274.34/x
  3. Step 3: Cross multiply
    19,745.55x = 29,630.04 × 7,274.34
  4. Step 4: Simplify right side
    19,745.55x = 215,538,985.17
  5. Step 5: Solve for x
    x = 215,538,985.17/19,745.55
  6. Step 6: Final answer
    x = 10,915.83

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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.