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Finding the Fourth Proportional to 21,762.88, 29,837.19 and 21,369.22

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Solution

The fourth proportional to 21,762.88, 29,837.19 and 21,369.22 is: 29,297.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,762.88 : 29,837.19 = 21,369.22 : x
  2. Step 2: Convert to fraction form
    21,762.88/29,837.19 = 21,369.22/x
  3. Step 3: Cross multiply
    21,762.88x = 29,837.19 × 21,369.22
  4. Step 4: Simplify right side
    21,762.88x = 637,597,477.29
  5. Step 5: Solve for x
    x = 637,597,477.29/21,762.88
  6. Step 6: Final answer
    x = 29,297.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.