Home / 21,311.57-29,409.95-11,751.62

Finding the Fourth Proportional to 21,311.57, 29,409.95 and 11,751.62

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Solution

The fourth proportional to 21,311.57, 29,409.95 and 11,751.62 is: 16,217.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.57 : 29,409.95 = 11,751.62 : x
  2. Step 2: Convert to fraction form
    21,311.57/29,409.95 = 11,751.62/x
  3. Step 3: Cross multiply
    21,311.57x = 29,409.95 × 11,751.62
  4. Step 4: Simplify right side
    21,311.57x = 345,614,350.81
  5. Step 5: Solve for x
    x = 345,614,350.81/21,311.57
  6. Step 6: Final answer
    x = 16,217.22

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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.