Home / 30,979.80-42,751.96-16,832.52

Finding the Fourth Proportional to 30,979.80, 42,751.96 and 16,832.52

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Solution

The fourth proportional to 30,979.80, 42,751.96 and 16,832.52 is: 23,228.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.80 : 42,751.96 = 16,832.52 : x
  2. Step 2: Convert to fraction form
    30,979.80/42,751.96 = 16,832.52/x
  3. Step 3: Cross multiply
    30,979.80x = 42,751.96 × 16,832.52
  4. Step 4: Simplify right side
    30,979.80x = 719,623,221.74
  5. Step 5: Solve for x
    x = 719,623,221.74/30,979.80
  6. Step 6: Final answer
    x = 23,228.79

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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.