Home / 34,181.80-51,272.70-20,991.40

Finding the Fourth Proportional to 34,181.80, 51,272.70 and 20,991.40

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Solution

The fourth proportional to 34,181.80, 51,272.70 and 20,991.40 is: 31,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,181.80 : 51,272.70 = 20,991.40 : x
  2. Step 2: Convert to fraction form
    34,181.80/51,272.70 = 20,991.40/x
  3. Step 3: Cross multiply
    34,181.80x = 51,272.70 × 20,991.40
  4. Step 4: Simplify right side
    34,181.80x = 1,076,285,754.78
  5. Step 5: Solve for x
    x = 1,076,285,754.78/34,181.80
  6. Step 6: Final answer
    x = 31,487.10

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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.