Home / 30,918.92-42,667.92-16,771.76

Finding the Fourth Proportional to 30,918.92, 42,667.92 and 16,771.76

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Solution

The fourth proportional to 30,918.92, 42,667.92 and 16,771.76 is: 23,144.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,918.92 : 42,667.92 = 16,771.76 : x
  2. Step 2: Convert to fraction form
    30,918.92/42,667.92 = 16,771.76/x
  3. Step 3: Cross multiply
    30,918.92x = 42,667.92 × 16,771.76
  4. Step 4: Simplify right side
    30,918.92x = 715,616,113.94
  5. Step 5: Solve for x
    x = 715,616,113.94/30,918.92
  6. Step 6: Final answer
    x = 23,144.93

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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.