Home / 21,424.44-29,555.82-13,873.21

Finding the Fourth Proportional to 21,424.44, 29,555.82 and 13,873.21

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Solution

The fourth proportional to 21,424.44, 29,555.82 and 13,873.21 is: 19,138.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.44 : 29,555.82 = 13,873.21 : x
  2. Step 2: Convert to fraction form
    21,424.44/29,555.82 = 13,873.21/x
  3. Step 3: Cross multiply
    21,424.44x = 29,555.82 × 13,873.21
  4. Step 4: Simplify right side
    21,424.44x = 410,034,206.91
  5. Step 5: Solve for x
    x = 410,034,206.91/21,424.44
  6. Step 6: Final answer
    x = 19,138.62

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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.