Home / 14,469.20-19,967.40-8,181.60

Finding the Fourth Proportional to 14,469.20, 19,967.40 and 8,181.60

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Solution

The fourth proportional to 14,469.20, 19,967.40 and 8,181.60 is: 11,290.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,469.20 : 19,967.40 = 8,181.60 : x
  2. Step 2: Convert to fraction form
    14,469.20/19,967.40 = 8,181.60/x
  3. Step 3: Cross multiply
    14,469.20x = 19,967.40 × 8,181.60
  4. Step 4: Simplify right side
    14,469.20x = 163,365,279.84
  5. Step 5: Solve for x
    x = 163,365,279.84/14,469.20
  6. Step 6: Final answer
    x = 11,290.55

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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.