Home / 12,723.71-18,992.88-11,785.68

Finding the Fourth Proportional to 12,723.71, 18,992.88 and 11,785.68

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Solution

The fourth proportional to 12,723.71, 18,992.88 and 11,785.68 is: 17,592.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,723.71 : 18,992.88 = 11,785.68 : x
  2. Step 2: Convert to fraction form
    12,723.71/18,992.88 = 11,785.68/x
  3. Step 3: Cross multiply
    12,723.71x = 18,992.88 × 11,785.68
  4. Step 4: Simplify right side
    12,723.71x = 223,844,005.96
  5. Step 5: Solve for x
    x = 223,844,005.96/12,723.71
  6. Step 6: Final answer
    x = 17,592.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.