Home / 15,911.42-21,963.67-13,664.27

Finding the Fourth Proportional to 15,911.42, 21,963.67 and 13,664.27

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Solution

The fourth proportional to 15,911.42, 21,963.67 and 13,664.27 is: 18,861.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,911.42 : 21,963.67 = 13,664.27 : x
  2. Step 2: Convert to fraction form
    15,911.42/21,963.67 = 13,664.27/x
  3. Step 3: Cross multiply
    15,911.42x = 21,963.67 × 13,664.27
  4. Step 4: Simplify right side
    15,911.42x = 300,117,537.82
  5. Step 5: Solve for x
    x = 300,117,537.82/15,911.42
  6. Step 6: Final answer
    x = 18,861.78

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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.