Home / 30,992.38-42,769.16-16,845.28

Finding the Fourth Proportional to 30,992.38, 42,769.16 and 16,845.28

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Solution

The fourth proportional to 30,992.38, 42,769.16 and 16,845.28 is: 23,246.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,992.38 : 42,769.16 = 16,845.28 : x
  2. Step 2: Convert to fraction form
    30,992.38/42,769.16 = 16,845.28/x
  3. Step 3: Cross multiply
    30,992.38x = 42,769.16 × 16,845.28
  4. Step 4: Simplify right side
    30,992.38x = 720,458,475.56
  5. Step 5: Solve for x
    x = 720,458,475.56/30,992.38
  6. Step 6: Final answer
    x = 23,246.31

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1.5x scale

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.