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Finding the Fourth Proportional to 38,279.52, 52,825.50 and 21,512.52

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Solution

The fourth proportional to 38,279.52, 52,825.50 and 21,512.52 is: 29,687.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,279.52 : 52,825.50 = 21,512.52 : x
  2. Step 2: Convert to fraction form
    38,279.52/52,825.50 = 21,512.52/x
  3. Step 3: Cross multiply
    38,279.52x = 52,825.50 × 21,512.52
  4. Step 4: Simplify right side
    38,279.52x = 1,136,409,625.26
  5. Step 5: Solve for x
    x = 1,136,409,625.26/38,279.52
  6. Step 6: Final answer
    x = 29,687.14

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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.