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Finding the Fourth Proportional to 18,471.54, 25,457.76 and 13,984.54

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Solution

The fourth proportional to 18,471.54, 25,457.76 and 13,984.54 is: 19,273.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,471.54 : 25,457.76 = 13,984.54 : x
  2. Step 2: Convert to fraction form
    18,471.54/25,457.76 = 13,984.54/x
  3. Step 3: Cross multiply
    18,471.54x = 25,457.76 × 13,984.54
  4. Step 4: Simplify right side
    18,471.54x = 356,015,063.03
  5. Step 5: Solve for x
    x = 356,015,063.03/18,471.54
  6. Step 6: Final answer
    x = 19,273.71

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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.