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Finding the Fourth Proportional to 38,645.37, 53,327.03 and 21,878.37

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Solution

The fourth proportional to 38,645.37, 53,327.03 and 21,878.37 is: 30,190.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,645.37 : 53,327.03 = 21,878.37 : x
  2. Step 2: Convert to fraction form
    38,645.37/53,327.03 = 21,878.37/x
  3. Step 3: Cross multiply
    38,645.37x = 53,327.03 × 21,878.37
  4. Step 4: Simplify right side
    38,645.37x = 1,166,708,383.95
  5. Step 5: Solve for x
    x = 1,166,708,383.95/38,645.37
  6. Step 6: Final answer
    x = 30,190.12

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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.