Home / 20,447.24-30,670.88-5,657.31

Finding the Fourth Proportional to 20,447.24, 30,670.88 and 5,657.31

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Solution

The fourth proportional to 20,447.24, 30,670.88 and 5,657.31 is: 8,485.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.24 : 30,670.88 = 5,657.31 : x
  2. Step 2: Convert to fraction form
    20,447.24/30,670.88 = 5,657.31/x
  3. Step 3: Cross multiply
    20,447.24x = 30,670.88 × 5,657.31
  4. Step 4: Simplify right side
    20,447.24x = 173,514,647.85
  5. Step 5: Solve for x
    x = 173,514,647.85/20,447.24
  6. Step 6: Final answer
    x = 8,485.97

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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.