Home / 28,050.84-42,081.12-12,469.68

Finding the Fourth Proportional to 28,050.84, 42,081.12 and 12,469.68

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Solution

The fourth proportional to 28,050.84, 42,081.12 and 12,469.68 is: 18,706.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,050.84 : 42,081.12 = 12,469.68 : x
  2. Step 2: Convert to fraction form
    28,050.84/42,081.12 = 12,469.68/x
  3. Step 3: Cross multiply
    28,050.84x = 42,081.12 × 12,469.68
  4. Step 4: Simplify right side
    28,050.84x = 524,738,100.44
  5. Step 5: Solve for x
    x = 524,738,100.44/28,050.84
  6. Step 6: Final answer
    x = 18,706.68

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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.