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Finding the Fourth Proportional to 25,995.80, 38,907.30 and 18,219.80

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Solution

The fourth proportional to 25,995.80, 38,907.30 and 18,219.80 is: 27,269.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,995.80 : 38,907.30 = 18,219.80 : x
  2. Step 2: Convert to fraction form
    25,995.80/38,907.30 = 18,219.80/x
  3. Step 3: Cross multiply
    25,995.80x = 38,907.30 × 18,219.80
  4. Step 4: Simplify right side
    25,995.80x = 708,883,224.54
  5. Step 5: Solve for x
    x = 708,883,224.54/25,995.80
  6. Step 6: Final answer
    x = 27,269.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.