Home / 28,331.92-42,450.63-19,998.28

Finding the Fourth Proportional to 28,331.92, 42,450.63 and 19,998.28

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Solution

The fourth proportional to 28,331.92, 42,450.63 and 19,998.28 is: 29,964.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,331.92 : 42,450.63 = 19,998.28 : x
  2. Step 2: Convert to fraction form
    28,331.92/42,450.63 = 19,998.28/x
  3. Step 3: Cross multiply
    28,331.92x = 42,450.63 × 19,998.28
  4. Step 4: Simplify right side
    28,331.92x = 848,939,584.92
  5. Step 5: Solve for x
    x = 848,939,584.92/28,331.92
  6. Step 6: Final answer
    x = 29,964.07

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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.