Home / 12,738.60-19,108.80-3,378.54

Finding the Fourth Proportional to 12,738.60, 19,108.80 and 3,378.54

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Solution

The fourth proportional to 12,738.60, 19,108.80 and 3,378.54 is: 5,068.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.60 : 19,108.80 = 3,378.54 : x
  2. Step 2: Convert to fraction form
    12,738.60/19,108.80 = 3,378.54/x
  3. Step 3: Cross multiply
    12,738.60x = 19,108.80 × 3,378.54
  4. Step 4: Simplify right side
    12,738.60x = 64,559,845.15
  5. Step 5: Solve for x
    x = 64,559,845.15/12,738.60
  6. Step 6: Final answer
    x = 5,068.05

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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.