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Finding the Fourth Proportional to 21,544.89, 29,742.03 and 14,386.89

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Solution

The fourth proportional to 21,544.89, 29,742.03 and 14,386.89 is: 19,860.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,544.89 : 29,742.03 = 14,386.89 : x
  2. Step 2: Convert to fraction form
    21,544.89/29,742.03 = 14,386.89/x
  3. Step 3: Cross multiply
    21,544.89x = 29,742.03 × 14,386.89
  4. Step 4: Simplify right side
    21,544.89x = 427,895,313.99
  5. Step 5: Solve for x
    x = 427,895,313.99/21,544.89
  6. Step 6: Final answer
    x = 19,860.64

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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.