Home / 15,485.50-21,370.17-8,412.04

Finding the Fourth Proportional to 15,485.50, 21,370.17 and 8,412.04

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Solution

The fourth proportional to 15,485.50, 21,370.17 and 8,412.04 is: 11,608.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.50 : 21,370.17 = 8,412.04 : x
  2. Step 2: Convert to fraction form
    15,485.50/21,370.17 = 8,412.04/x
  3. Step 3: Cross multiply
    15,485.50x = 21,370.17 × 8,412.04
  4. Step 4: Simplify right side
    15,485.50x = 179,766,724.85
  5. Step 5: Solve for x
    x = 179,766,724.85/15,485.50
  6. Step 6: Final answer
    x = 11,608.71

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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.