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Finding the Fourth Proportional to 18,407, 25,400.06 and 10,449.56

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Solution

The fourth proportional to 18,407, 25,400.06 and 10,449.56 is: 14,419.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,407 : 25,400.06 = 10,449.56 : x
  2. Step 2: Convert to fraction form
    18,407/25,400.06 = 10,449.56/x
  3. Step 3: Cross multiply
    18,407x = 25,400.06 × 10,449.56
  4. Step 4: Simplify right side
    18,407x = 265,419,450.97
  5. Step 5: Solve for x
    x = 265,419,450.97/18,407
  6. Step 6: Final answer
    x = 14,419.48

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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.