Home / 15,791.72-21,884.75-15,569

Finding the Fourth Proportional to 15,791.72, 21,884.75 and 15,569

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Solution

The fourth proportional to 15,791.72, 21,884.75 and 15,569 is: 21,576.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,791.72 : 21,884.75 = 15,569 : x
  2. Step 2: Convert to fraction form
    15,791.72/21,884.75 = 15,569/x
  3. Step 3: Cross multiply
    15,791.72x = 21,884.75 × 15,569
  4. Step 4: Simplify right side
    15,791.72x = 340,723,672.75
  5. Step 5: Solve for x
    x = 340,723,672.75/15,791.72
  6. Step 6: Final answer
    x = 21,576.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.