Home / 20,169.91-27,826.84-12,509.64

Finding the Fourth Proportional to 20,169.91, 27,826.84 and 12,509.64

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Solution

The fourth proportional to 20,169.91, 27,826.84 and 12,509.64 is: 17,258.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.91 : 27,826.84 = 12,509.64 : x
  2. Step 2: Convert to fraction form
    20,169.91/27,826.84 = 12,509.64/x
  3. Step 3: Cross multiply
    20,169.91x = 27,826.84 × 12,509.64
  4. Step 4: Simplify right side
    20,169.91x = 348,103,766.37
  5. Step 5: Solve for x
    x = 348,103,766.37/20,169.91
  6. Step 6: Final answer
    x = 17,258.57

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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.