Home / 13,416.93-20,133.59-8,479.77

Finding the Fourth Proportional to 13,416.93, 20,133.59 and 8,479.77

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Solution

The fourth proportional to 13,416.93, 20,133.59 and 8,479.77 is: 12,724.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.93 : 20,133.59 = 8,479.77 : x
  2. Step 2: Convert to fraction form
    13,416.93/20,133.59 = 8,479.77/x
  3. Step 3: Cross multiply
    13,416.93x = 20,133.59 × 8,479.77
  4. Step 4: Simplify right side
    13,416.93x = 170,728,170.08
  5. Step 5: Solve for x
    x = 170,728,170.08/13,416.93
  6. Step 6: Final answer
    x = 12,724.83

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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.