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Finding the Fourth Proportional to 18,833, 25,989.70 and 10,449.48

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Solution

The fourth proportional to 18,833, 25,989.70 and 10,449.48 is: 14,420.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,833 : 25,989.70 = 10,449.48 : x
  2. Step 2: Convert to fraction form
    18,833/25,989.70 = 10,449.48/x
  3. Step 3: Cross multiply
    18,833x = 25,989.70 × 10,449.48
  4. Step 4: Simplify right side
    18,833x = 271,578,850.36
  5. Step 5: Solve for x
    x = 271,578,850.36/18,833
  6. Step 6: Final answer
    x = 14,420.37

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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.