Home / 12,895.45-17,785.84-11,106.05

Finding the Fourth Proportional to 12,895.45, 17,785.84 and 11,106.05

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Solution

The fourth proportional to 12,895.45, 17,785.84 and 11,106.05 is: 15,317.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,895.45 : 17,785.84 = 11,106.05 : x
  2. Step 2: Convert to fraction form
    12,895.45/17,785.84 = 11,106.05/x
  3. Step 3: Cross multiply
    12,895.45x = 17,785.84 × 11,106.05
  4. Step 4: Simplify right side
    12,895.45x = 197,530,428.33
  5. Step 5: Solve for x
    x = 197,530,428.33/12,895.45
  6. Step 6: Final answer
    x = 15,317.84

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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.