Home / 30,918.39-42,667.61-16,771.34

Finding the Fourth Proportional to 30,918.39, 42,667.61 and 16,771.34

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Solution

The fourth proportional to 30,918.39, 42,667.61 and 16,771.34 is: 23,144.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,918.39 : 42,667.61 = 16,771.34 : x
  2. Step 2: Convert to fraction form
    30,918.39/42,667.61 = 16,771.34/x
  3. Step 3: Cross multiply
    30,918.39x = 42,667.61 × 16,771.34
  4. Step 4: Simplify right side
    30,918.39x = 715,592,697.10
  5. Step 5: Solve for x
    x = 715,592,697.10/30,918.39
  6. Step 6: Final answer
    x = 23,144.57

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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.