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Finding the Fourth Proportional to 21,644.01, 29,802.11 and 18,450.14

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Solution

The fourth proportional to 21,644.01, 29,802.11 and 18,450.14 is: 25,404.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,644.01 : 29,802.11 = 18,450.14 : x
  2. Step 2: Convert to fraction form
    21,644.01/29,802.11 = 18,450.14/x
  3. Step 3: Cross multiply
    21,644.01x = 29,802.11 × 18,450.14
  4. Step 4: Simplify right side
    21,644.01x = 549,852,860.53
  5. Step 5: Solve for x
    x = 549,852,860.53/21,644.01
  6. Step 6: Final answer
    x = 25,404.39

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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.