Home / 38,530.12-53,169-21,759.88

Finding the Fourth Proportional to 38,530.12, 53,169 and 21,759.88

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Solution

The fourth proportional to 38,530.12, 53,169 and 21,759.88 is: 30,027.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,530.12 : 53,169 = 21,759.88 : x
  2. Step 2: Convert to fraction form
    38,530.12/53,169 = 21,759.88/x
  3. Step 3: Cross multiply
    38,530.12x = 53,169 × 21,759.88
  4. Step 4: Simplify right side
    38,530.12x = 1,156,951,059.72
  5. Step 5: Solve for x
    x = 1,156,951,059.72/38,530.12
  6. Step 6: Final answer
    x = 30,027.19

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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.