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Finding the Fourth Proportional to 39,588, 54,631.44 and 21,924

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Solution

The fourth proportional to 39,588, 54,631.44 and 21,924 is: 30,255.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,588 : 54,631.44 = 21,924 : x
  2. Step 2: Convert to fraction form
    39,588/54,631.44 = 21,924/x
  3. Step 3: Cross multiply
    39,588x = 54,631.44 × 21,924
  4. Step 4: Simplify right side
    39,588x = 1,197,739,690.56
  5. Step 5: Solve for x
    x = 1,197,739,690.56/39,588
  6. Step 6: Final answer
    x = 30,255.12

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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.