Home / 21,200.64-29,241.68-13,131.68

Finding the Fourth Proportional to 21,200.64, 29,241.68 and 13,131.68

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Solution

The fourth proportional to 21,200.64, 29,241.68 and 13,131.68 is: 18,112.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.64 : 29,241.68 = 13,131.68 : x
  2. Step 2: Convert to fraction form
    21,200.64/29,241.68 = 13,131.68/x
  3. Step 3: Cross multiply
    21,200.64x = 29,241.68 × 13,131.68
  4. Step 4: Simplify right side
    21,200.64x = 383,992,384.42
  5. Step 5: Solve for x
    x = 383,992,384.42/21,200.64
  6. Step 6: Final answer
    x = 18,112.30

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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.