Home / 38,856.63-53,619.96-21,861.60

Finding the Fourth Proportional to 38,856.63, 53,619.96 and 21,861.60

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Solution

The fourth proportional to 38,856.63, 53,619.96 and 21,861.60 is: 30,167.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,856.63 : 53,619.96 = 21,861.60 : x
  2. Step 2: Convert to fraction form
    38,856.63/53,619.96 = 21,861.60/x
  3. Step 3: Cross multiply
    38,856.63x = 53,619.96 × 21,861.60
  4. Step 4: Simplify right side
    38,856.63x = 1,172,218,117.54
  5. Step 5: Solve for x
    x = 1,172,218,117.54/38,856.63
  6. Step 6: Final answer
    x = 30,167.78

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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.