Home / 15,771.72-21,744.04-13,072.85

Finding the Fourth Proportional to 15,771.72, 21,744.04 and 13,072.85

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Solution

The fourth proportional to 15,771.72, 21,744.04 and 13,072.85 is: 18,023.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,771.72 : 21,744.04 = 13,072.85 : x
  2. Step 2: Convert to fraction form
    15,771.72/21,744.04 = 13,072.85/x
  3. Step 3: Cross multiply
    15,771.72x = 21,744.04 × 13,072.85
  4. Step 4: Simplify right side
    15,771.72x = 284,256,573.31
  5. Step 5: Solve for x
    x = 284,256,573.31/15,771.72
  6. Step 6: Final answer
    x = 18,023.18

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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.