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Finding the Fourth Proportional to 18,620.37, 25,701.21 and 10,970.37

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Solution

The fourth proportional to 18,620.37, 25,701.21 and 10,970.37 is: 15,142.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.37 : 25,701.21 = 10,970.37 : x
  2. Step 2: Convert to fraction form
    18,620.37/25,701.21 = 10,970.37/x
  3. Step 3: Cross multiply
    18,620.37x = 25,701.21 × 10,970.37
  4. Step 4: Simplify right side
    18,620.37x = 281,951,783.15
  5. Step 5: Solve for x
    x = 281,951,783.15/18,620.37
  6. Step 6: Final answer
    x = 15,142.11

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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.