Home / 15,615.26-21,550.54-8,542.74

Finding the Fourth Proportional to 15,615.26, 21,550.54 and 8,542.74

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Solution

The fourth proportional to 15,615.26, 21,550.54 and 8,542.74 is: 11,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.26 : 21,550.54 = 8,542.74 : x
  2. Step 2: Convert to fraction form
    15,615.26/21,550.54 = 8,542.74/x
  3. Step 3: Cross multiply
    15,615.26x = 21,550.54 × 8,542.74
  4. Step 4: Simplify right side
    15,615.26x = 184,100,735.55
  5. Step 5: Solve for x
    x = 184,100,735.55/15,615.26
  6. Step 6: Final answer
    x = 11,789.80

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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.