Home / 21,322.64-29,425.41-11,891.42

Finding the Fourth Proportional to 21,322.64, 29,425.41 and 11,891.42

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Solution

The fourth proportional to 21,322.64, 29,425.41 and 11,891.42 is: 16,410.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.64 : 29,425.41 = 11,891.42 : x
  2. Step 2: Convert to fraction form
    21,322.64/29,425.41 = 11,891.42/x
  3. Step 3: Cross multiply
    21,322.64x = 29,425.41 × 11,891.42
  4. Step 4: Simplify right side
    21,322.64x = 349,909,908.98
  5. Step 5: Solve for x
    x = 349,909,908.98/21,322.64
  6. Step 6: Final answer
    x = 16,410.25

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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.