Home / 28,783.20-39,720.78-16,208.04

Finding the Fourth Proportional to 28,783.20, 39,720.78 and 16,208.04

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Solution

The fourth proportional to 28,783.20, 39,720.78 and 16,208.04 is: 22,367.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,783.20 : 39,720.78 = 16,208.04 : x
  2. Step 2: Convert to fraction form
    28,783.20/39,720.78 = 16,208.04/x
  3. Step 3: Cross multiply
    28,783.20x = 39,720.78 × 16,208.04
  4. Step 4: Simplify right side
    28,783.20x = 643,795,991.07
  5. Step 5: Solve for x
    x = 643,795,991.07/28,783.20
  6. Step 6: Final answer
    x = 22,367.07

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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.