Home / 20,296.76-30,447.59-7,146.41

Finding the Fourth Proportional to 20,296.76, 30,447.59 and 7,146.41

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Solution

The fourth proportional to 20,296.76, 30,447.59 and 7,146.41 is: 10,720.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,296.76 : 30,447.59 = 7,146.41 : x
  2. Step 2: Convert to fraction form
    20,296.76/30,447.59 = 7,146.41/x
  3. Step 3: Cross multiply
    20,296.76x = 30,447.59 × 7,146.41
  4. Step 4: Simplify right side
    20,296.76x = 217,590,773.68
  5. Step 5: Solve for x
    x = 217,590,773.68/20,296.76
  6. Step 6: Final answer
    x = 10,720.47

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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.