Home / 30,409.88-41,965.16-16,981.34

Finding the Fourth Proportional to 30,409.88, 41,965.16 and 16,981.34

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Solution

The fourth proportional to 30,409.88, 41,965.16 and 16,981.34 is: 23,433.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,409.88 : 41,965.16 = 16,981.34 : x
  2. Step 2: Convert to fraction form
    30,409.88/41,965.16 = 16,981.34/x
  3. Step 3: Cross multiply
    30,409.88x = 41,965.16 × 16,981.34
  4. Step 4: Simplify right side
    30,409.88x = 712,624,355.38
  5. Step 5: Solve for x
    x = 712,624,355.38/30,409.88
  6. Step 6: Final answer
    x = 23,433.98

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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.