Home / 30,389.85-41,938.79-16,961.04

Finding the Fourth Proportional to 30,389.85, 41,938.79 and 16,961.04

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Solution

The fourth proportional to 30,389.85, 41,938.79 and 16,961.04 is: 23,406.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,389.85 : 41,938.79 = 16,961.04 : x
  2. Step 2: Convert to fraction form
    30,389.85/41,938.79 = 16,961.04/x
  3. Step 3: Cross multiply
    30,389.85x = 41,938.79 × 16,961.04
  4. Step 4: Simplify right side
    30,389.85x = 711,325,409.94
  5. Step 5: Solve for x
    x = 711,325,409.94/30,389.85
  6. Step 6: Final answer
    x = 23,406.68

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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.