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Finding the Fourth Proportional to 30,609, 42,241.21 and 17,181.29

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Solution

The fourth proportional to 30,609, 42,241.21 and 17,181.29 is: 23,710.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,609 : 42,241.21 = 17,181.29 : x
  2. Step 2: Convert to fraction form
    30,609/42,241.21 = 17,181.29/x
  3. Step 3: Cross multiply
    30,609x = 42,241.21 × 17,181.29
  4. Step 4: Simplify right side
    30,609x = 725,758,541.61
  5. Step 5: Solve for x
    x = 725,758,541.61/30,609
  6. Step 6: Final answer
    x = 23,710.63

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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.