Home / 21,067.32-29,071.71-12,579.03

Finding the Fourth Proportional to 21,067.32, 29,071.71 and 12,579.03

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Solution

The fourth proportional to 21,067.32, 29,071.71 and 12,579.03 is: 17,358.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.32 : 29,071.71 = 12,579.03 : x
  2. Step 2: Convert to fraction form
    21,067.32/29,071.71 = 12,579.03/x
  3. Step 3: Cross multiply
    21,067.32x = 29,071.71 × 12,579.03
  4. Step 4: Simplify right side
    21,067.32x = 365,693,912.24
  5. Step 5: Solve for x
    x = 365,693,912.24/21,067.32
  6. Step 6: Final answer
    x = 17,358.35

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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.