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Finding the Fourth Proportional to 30,604.40, 42,235.80 and 17,174.96

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Solution

The fourth proportional to 30,604.40, 42,235.80 and 17,174.96 is: 23,702.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,604.40 : 42,235.80 = 17,174.96 : x
  2. Step 2: Convert to fraction form
    30,604.40/42,235.80 = 17,174.96/x
  3. Step 3: Cross multiply
    30,604.40x = 42,235.80 × 17,174.96
  4. Step 4: Simplify right side
    30,604.40x = 725,398,175.57
  5. Step 5: Solve for x
    x = 725,398,175.57/30,604.40
  6. Step 6: Final answer
    x = 23,702.41

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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.