Home / 38,690.58-53,396.24-21,694.55

Finding the Fourth Proportional to 38,690.58, 53,396.24 and 21,694.55

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Solution

The fourth proportional to 38,690.58, 53,396.24 and 21,694.55 is: 29,940.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,690.58 : 53,396.24 = 21,694.55 : x
  2. Step 2: Convert to fraction form
    38,690.58/53,396.24 = 21,694.55/x
  3. Step 3: Cross multiply
    38,690.58x = 53,396.24 × 21,694.55
  4. Step 4: Simplify right side
    38,690.58x = 1,158,407,423.51
  5. Step 5: Solve for x
    x = 1,158,407,423.51/38,690.58
  6. Step 6: Final answer
    x = 29,940.30

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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.