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Finding the Fourth Proportional to 21,448.98, 29,599.21 and 11,888.83

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Solution

The fourth proportional to 21,448.98, 29,599.21 and 11,888.83 is: 16,406.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,448.98 : 29,599.21 = 11,888.83 : x
  2. Step 2: Convert to fraction form
    21,448.98/29,599.21 = 11,888.83/x
  3. Step 3: Cross multiply
    21,448.98x = 29,599.21 × 11,888.83
  4. Step 4: Simplify right side
    21,448.98x = 351,899,975.82
  5. Step 5: Solve for x
    x = 351,899,975.82/21,448.98
  6. Step 6: Final answer
    x = 16,406.37

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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.