Home / 20,941.88-28,899.31-11,381.54

Finding the Fourth Proportional to 20,941.88, 28,899.31 and 11,381.54

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Solution

The fourth proportional to 20,941.88, 28,899.31 and 11,381.54 is: 15,706.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.88 : 28,899.31 = 11,381.54 : x
  2. Step 2: Convert to fraction form
    20,941.88/28,899.31 = 11,381.54/x
  3. Step 3: Cross multiply
    20,941.88x = 28,899.31 × 11,381.54
  4. Step 4: Simplify right side
    20,941.88x = 328,918,595.83
  5. Step 5: Solve for x
    x = 328,918,595.83/20,941.88
  6. Step 6: Final answer
    x = 15,706.26

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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.