Home / 28,819.50-43,218.84-12,180.81

Finding the Fourth Proportional to 28,819.50, 43,218.84 and 12,180.81

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Solution

The fourth proportional to 28,819.50, 43,218.84 and 12,180.81 is: 18,266.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,819.50 : 43,218.84 = 12,180.81 : x
  2. Step 2: Convert to fraction form
    28,819.50/43,218.84 = 12,180.81/x
  3. Step 3: Cross multiply
    28,819.50x = 43,218.84 × 12,180.81
  4. Step 4: Simplify right side
    28,819.50x = 526,440,478.46
  5. Step 5: Solve for x
    x = 526,440,478.46/28,819.50
  6. Step 6: Final answer
    x = 18,266.82

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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.