Home / 13,738.20-20,600.40-6,718.74

Finding the Fourth Proportional to 13,738.20, 20,600.40 and 6,718.74

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Solution

The fourth proportional to 13,738.20, 20,600.40 and 6,718.74 is: 10,074.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.20 : 20,600.40 = 6,718.74 : x
  2. Step 2: Convert to fraction form
    13,738.20/20,600.40 = 6,718.74/x
  3. Step 3: Cross multiply
    13,738.20x = 20,600.40 × 6,718.74
  4. Step 4: Simplify right side
    13,738.20x = 138,408,731.50
  5. Step 5: Solve for x
    x = 138,408,731.50/13,738.20
  6. Step 6: Final answer
    x = 10,074.74

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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.