Home / 30,918.38-42,667.43-16,771.19

Finding the Fourth Proportional to 30,918.38, 42,667.43 and 16,771.19

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Solution

The fourth proportional to 30,918.38, 42,667.43 and 16,771.19 is: 23,144.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,918.38 : 42,667.43 = 16,771.19 : x
  2. Step 2: Convert to fraction form
    30,918.38/42,667.43 = 16,771.19/x
  3. Step 3: Cross multiply
    30,918.38x = 42,667.43 × 16,771.19
  4. Step 4: Simplify right side
    30,918.38x = 715,583,278.15
  5. Step 5: Solve for x
    x = 715,583,278.15/30,918.38
  6. Step 6: Final answer
    x = 23,144.27

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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.