Home / 28,331.44-42,449.86-19,997.80

Finding the Fourth Proportional to 28,331.44, 42,449.86 and 19,997.80

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Solution

The fourth proportional to 28,331.44, 42,449.86 and 19,997.80 is: 29,963.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,331.44 : 42,449.86 = 19,997.80 : x
  2. Step 2: Convert to fraction form
    28,331.44/42,449.86 = 19,997.80/x
  3. Step 3: Cross multiply
    28,331.44x = 42,449.86 × 19,997.80
  4. Step 4: Simplify right side
    28,331.44x = 848,903,810.31
  5. Step 5: Solve for x
    x = 848,903,810.31/28,331.44
  6. Step 6: Final answer
    x = 29,963.31

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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.