Home / 15,615.83-21,550.19-8,542.25

Finding the Fourth Proportional to 15,615.83, 21,550.19 and 8,542.25

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Solution

The fourth proportional to 15,615.83, 21,550.19 and 8,542.25 is: 11,788.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.83 : 21,550.19 = 8,542.25 : x
  2. Step 2: Convert to fraction form
    15,615.83/21,550.19 = 8,542.25/x
  3. Step 3: Cross multiply
    15,615.83x = 21,550.19 × 8,542.25
  4. Step 4: Simplify right side
    15,615.83x = 184,087,099.85
  5. Step 5: Solve for x
    x = 184,087,099.85/15,615.83
  6. Step 6: Final answer
    x = 11,788.49

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Double scale
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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.