Home / 21,189.57-29,240.58-11,629.23

Finding the Fourth Proportional to 21,189.57, 29,240.58 and 11,629.23

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Solution

The fourth proportional to 21,189.57, 29,240.58 and 11,629.23 is: 16,047.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.57 : 29,240.58 = 11,629.23 : x
  2. Step 2: Convert to fraction form
    21,189.57/29,240.58 = 11,629.23/x
  3. Step 3: Cross multiply
    21,189.57x = 29,240.58 × 11,629.23
  4. Step 4: Simplify right side
    21,189.57x = 340,045,430.15
  5. Step 5: Solve for x
    x = 340,045,430.15/21,189.57
  6. Step 6: Final answer
    x = 16,047.77

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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.