Home / 18,919.45-26,104.86-10,961.20

Finding the Fourth Proportional to 18,919.45, 26,104.86 and 10,961.20

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Solution

The fourth proportional to 18,919.45, 26,104.86 and 10,961.20 is: 15,124.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.45 : 26,104.86 = 10,961.20 : x
  2. Step 2: Convert to fraction form
    18,919.45/26,104.86 = 10,961.20/x
  3. Step 3: Cross multiply
    18,919.45x = 26,104.86 × 10,961.20
  4. Step 4: Simplify right side
    18,919.45x = 286,140,591.43
  5. Step 5: Solve for x
    x = 286,140,591.43/18,919.45
  6. Step 6: Final answer
    x = 15,124.15

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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.