Home / 16,979.22-25,447.86-12,315.24

Finding the Fourth Proportional to 16,979.22, 25,447.86 and 12,315.24

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Solution

The fourth proportional to 16,979.22, 25,447.86 and 12,315.24 is: 18,457.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,979.22 : 25,447.86 = 12,315.24 : x
  2. Step 2: Convert to fraction form
    16,979.22/25,447.86 = 12,315.24/x
  3. Step 3: Cross multiply
    16,979.22x = 25,447.86 × 12,315.24
  4. Step 4: Simplify right side
    16,979.22x = 313,396,503.39
  5. Step 5: Solve for x
    x = 313,396,503.39/16,979.22
  6. Step 6: Final answer
    x = 18,457.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.