Home / 28,232.62-38,960.75-15,485.54

Finding the Fourth Proportional to 28,232.62, 38,960.75 and 15,485.54

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Solution

The fourth proportional to 28,232.62, 38,960.75 and 15,485.54 is: 21,369.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,232.62 : 38,960.75 = 15,485.54 : x
  2. Step 2: Convert to fraction form
    28,232.62/38,960.75 = 15,485.54/x
  3. Step 3: Cross multiply
    28,232.62x = 38,960.75 × 15,485.54
  4. Step 4: Simplify right side
    28,232.62x = 603,328,077.73
  5. Step 5: Solve for x
    x = 603,328,077.73/28,232.62
  6. Step 6: Final answer
    x = 21,369.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.