Home / 15,404.18-21,257.77-8,330.60

Finding the Fourth Proportional to 15,404.18, 21,257.77 and 8,330.60

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Solution

The fourth proportional to 15,404.18, 21,257.77 and 8,330.60 is: 11,496.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,404.18 : 21,257.77 = 8,330.60 : x
  2. Step 2: Convert to fraction form
    15,404.18/21,257.77 = 8,330.60/x
  3. Step 3: Cross multiply
    15,404.18x = 21,257.77 × 8,330.60
  4. Step 4: Simplify right side
    15,404.18x = 177,089,978.76
  5. Step 5: Solve for x
    x = 177,089,978.76/15,404.18
  6. Step 6: Final answer
    x = 11,496.23

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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.