Home / 20,495.68-30,744.63-6,456.81

Finding the Fourth Proportional to 20,495.68, 30,744.63 and 6,456.81

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Solution

The fourth proportional to 20,495.68, 30,744.63 and 6,456.81 is: 9,685.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.68 : 30,744.63 = 6,456.81 : x
  2. Step 2: Convert to fraction form
    20,495.68/30,744.63 = 6,456.81/x
  3. Step 3: Cross multiply
    20,495.68x = 30,744.63 × 6,456.81
  4. Step 4: Simplify right side
    20,495.68x = 198,512,210.22
  5. Step 5: Solve for x
    x = 198,512,210.22/20,495.68
  6. Step 6: Final answer
    x = 9,685.56

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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.