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Finding the Fourth Proportional to 30,405.41, 41,959.06 and 16,976.89

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Solution

The fourth proportional to 30,405.41, 41,959.06 and 16,976.89 is: 23,427.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,405.41 : 41,959.06 = 16,976.89 : x
  2. Step 2: Convert to fraction form
    30,405.41/41,959.06 = 16,976.89/x
  3. Step 3: Cross multiply
    30,405.41x = 41,959.06 × 16,976.89
  4. Step 4: Simplify right side
    30,405.41x = 712,334,346.12
  5. Step 5: Solve for x
    x = 712,334,346.12/30,405.41
  6. Step 6: Final answer
    x = 23,427.88

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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.