Home / 21,114.72-29,137.87-11,554.57

Finding the Fourth Proportional to 21,114.72, 29,137.87 and 11,554.57

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Solution

The fourth proportional to 21,114.72, 29,137.87 and 11,554.57 is: 15,945.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,114.72 : 29,137.87 = 11,554.57 : x
  2. Step 2: Convert to fraction form
    21,114.72/29,137.87 = 11,554.57/x
  3. Step 3: Cross multiply
    21,114.72x = 29,137.87 × 11,554.57
  4. Step 4: Simplify right side
    21,114.72x = 336,675,558.57
  5. Step 5: Solve for x
    x = 336,675,558.57/21,114.72
  6. Step 6: Final answer
    x = 15,945.06

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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.