Home / 28,811.65-43,222.09-12,171.84

Finding the Fourth Proportional to 28,811.65, 43,222.09 and 12,171.84

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Solution

The fourth proportional to 28,811.65, 43,222.09 and 12,171.84 is: 18,259.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,811.65 : 43,222.09 = 12,171.84 : x
  2. Step 2: Convert to fraction form
    28,811.65/43,222.09 = 12,171.84/x
  3. Step 3: Cross multiply
    28,811.65x = 43,222.09 × 12,171.84
  4. Step 4: Simplify right side
    28,811.65x = 526,092,194.26
  5. Step 5: Solve for x
    x = 526,092,194.26/28,811.65
  6. Step 6: Final answer
    x = 18,259.70

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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.