Home / 21,257.64-29,327.62-13,296.84

Finding the Fourth Proportional to 21,257.64, 29,327.62 and 13,296.84

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Solution

The fourth proportional to 21,257.64, 29,327.62 and 13,296.84 is: 18,344.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257.64 : 29,327.62 = 13,296.84 : x
  2. Step 2: Convert to fraction form
    21,257.64/29,327.62 = 13,296.84/x
  3. Step 3: Cross multiply
    21,257.64x = 29,327.62 × 13,296.84
  4. Step 4: Simplify right side
    21,257.64x = 389,964,670.72
  5. Step 5: Solve for x
    x = 389,964,670.72/21,257.64
  6. Step 6: Final answer
    x = 18,344.68

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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.