Home / 20,336.48-30,505.08-7,188.56

Finding the Fourth Proportional to 20,336.48, 30,505.08 and 7,188.56

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Solution

The fourth proportional to 20,336.48, 30,505.08 and 7,188.56 is: 10,782.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.48 : 30,505.08 = 7,188.56 : x
  2. Step 2: Convert to fraction form
    20,336.48/30,505.08 = 7,188.56/x
  3. Step 3: Cross multiply
    20,336.48x = 30,505.08 × 7,188.56
  4. Step 4: Simplify right side
    20,336.48x = 219,287,597.88
  5. Step 5: Solve for x
    x = 219,287,597.88/20,336.48
  6. Step 6: Final answer
    x = 10,782.97

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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.