Home / 20,621.96-30,905.40-10,740.52

Finding the Fourth Proportional to 20,621.96, 30,905.40 and 10,740.52

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Solution

The fourth proportional to 20,621.96, 30,905.40 and 10,740.52 is: 16,096.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.96 : 30,905.40 = 10,740.52 : x
  2. Step 2: Convert to fraction form
    20,621.96/30,905.40 = 10,740.52/x
  3. Step 3: Cross multiply
    20,621.96x = 30,905.40 × 10,740.52
  4. Step 4: Simplify right side
    20,621.96x = 331,940,066.81
  5. Step 5: Solve for x
    x = 331,940,066.81/20,621.96
  6. Step 6: Final answer
    x = 16,096.44

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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.