Home / 25,415.20-38,133.60-12,260.80

Finding the Fourth Proportional to 25,415.20, 38,133.60 and 12,260.80

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Solution

The fourth proportional to 25,415.20, 38,133.60 and 12,260.80 is: 18,396.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,415.20 : 38,133.60 = 12,260.80 : x
  2. Step 2: Convert to fraction form
    25,415.20/38,133.60 = 12,260.80/x
  3. Step 3: Cross multiply
    25,415.20x = 38,133.60 × 12,260.80
  4. Step 4: Simplify right side
    25,415.20x = 467,548,442.88
  5. Step 5: Solve for x
    x = 467,548,442.88/25,415.20
  6. Step 6: Final answer
    x = 18,396.41

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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.