Home / 13,781.88-20,662.62-4,416.48

Finding the Fourth Proportional to 13,781.88, 20,662.62 and 4,416.48

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Solution

The fourth proportional to 13,781.88, 20,662.62 and 4,416.48 is: 6,621.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.88 : 20,662.62 = 4,416.48 : x
  2. Step 2: Convert to fraction form
    13,781.88/20,662.62 = 4,416.48/x
  3. Step 3: Cross multiply
    13,781.88x = 20,662.62 × 4,416.48
  4. Step 4: Simplify right side
    13,781.88x = 91,256,047.98
  5. Step 5: Solve for x
    x = 91,256,047.98/13,781.88
  6. Step 6: Final answer
    x = 6,621.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.