Home / 13,826.28-19,080.78-7,858.95

Finding the Fourth Proportional to 13,826.28, 19,080.78 and 7,858.95

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Solution

The fourth proportional to 13,826.28, 19,080.78 and 7,858.95 is: 10,845.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.28 : 19,080.78 = 7,858.95 : x
  2. Step 2: Convert to fraction form
    13,826.28/19,080.78 = 7,858.95/x
  3. Step 3: Cross multiply
    13,826.28x = 19,080.78 × 7,858.95
  4. Step 4: Simplify right side
    13,826.28x = 149,954,895.98
  5. Step 5: Solve for x
    x = 149,954,895.98/13,826.28
  6. Step 6: Final answer
    x = 10,845.64

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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.