Home / 21,399.94-29,540.04-19,157.66

Finding the Fourth Proportional to 21,399.94, 29,540.04 and 19,157.66

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Solution

The fourth proportional to 21,399.94, 29,540.04 and 19,157.66 is: 26,444.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,399.94 : 29,540.04 = 19,157.66 : x
  2. Step 2: Convert to fraction form
    21,399.94/29,540.04 = 19,157.66/x
  3. Step 3: Cross multiply
    21,399.94x = 29,540.04 × 19,157.66
  4. Step 4: Simplify right side
    21,399.94x = 565,918,042.71
  5. Step 5: Solve for x
    x = 565,918,042.71/21,399.94
  6. Step 6: Final answer
    x = 26,444.84

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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.