Home / 21,067.21-29,069.94-12,570.31

Finding the Fourth Proportional to 21,067.21, 29,069.94 and 12,570.31

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Solution

The fourth proportional to 21,067.21, 29,069.94 and 12,570.31 is: 17,345.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.21 : 29,069.94 = 12,570.31 : x
  2. Step 2: Convert to fraction form
    21,067.21/29,069.94 = 12,570.31/x
  3. Step 3: Cross multiply
    21,067.21x = 29,069.94 × 12,570.31
  4. Step 4: Simplify right side
    21,067.21x = 365,418,157.48
  5. Step 5: Solve for x
    x = 365,418,157.48/21,067.21
  6. Step 6: Final answer
    x = 17,345.35

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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.