Home / 30,918.36-42,667.34-16,771.16

Finding the Fourth Proportional to 30,918.36, 42,667.34 and 16,771.16

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Solution

The fourth proportional to 30,918.36, 42,667.34 and 16,771.16 is: 23,144.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,918.36 : 42,667.34 = 16,771.16 : x
  2. Step 2: Convert to fraction form
    30,918.36/42,667.34 = 16,771.16/x
  3. Step 3: Cross multiply
    30,918.36x = 42,667.34 × 16,771.16
  4. Step 4: Simplify right side
    30,918.36x = 715,580,785.91
  5. Step 5: Solve for x
    x = 715,580,785.91/30,918.36
  6. Step 6: Final answer
    x = 23,144.20

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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.