Home / 28,441.45-42,668.39-8,721.54

Finding the Fourth Proportional to 28,441.45, 42,668.39 and 8,721.54

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Solution

The fourth proportional to 28,441.45, 42,668.39 and 8,721.54 is: 13,084.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,441.45 : 42,668.39 = 8,721.54 : x
  2. Step 2: Convert to fraction form
    28,441.45/42,668.39 = 8,721.54/x
  3. Step 3: Cross multiply
    28,441.45x = 42,668.39 × 8,721.54
  4. Step 4: Simplify right side
    28,441.45x = 372,133,813.17
  5. Step 5: Solve for x
    x = 372,133,813.17/28,441.45
  6. Step 6: Final answer
    x = 13,084.21

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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.