Home / 21,986.70-30,355.41-16,941.35

Finding the Fourth Proportional to 21,986.70, 30,355.41 and 16,941.35

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Solution

The fourth proportional to 21,986.70, 30,355.41 and 16,941.35 is: 23,389.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.70 : 30,355.41 = 16,941.35 : x
  2. Step 2: Convert to fraction form
    21,986.70/30,355.41 = 16,941.35/x
  3. Step 3: Cross multiply
    21,986.70x = 30,355.41 × 16,941.35
  4. Step 4: Simplify right side
    21,986.70x = 514,261,625.20
  5. Step 5: Solve for x
    x = 514,261,625.20/21,986.70
  6. Step 6: Final answer
    x = 23,389.67

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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.