Home / 20,364.96-30,537.75-7,890.81

Finding the Fourth Proportional to 20,364.96, 30,537.75 and 7,890.81

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Solution

The fourth proportional to 20,364.96, 30,537.75 and 7,890.81 is: 11,832.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364.96 : 30,537.75 = 7,890.81 : x
  2. Step 2: Convert to fraction form
    20,364.96/30,537.75 = 7,890.81/x
  3. Step 3: Cross multiply
    20,364.96x = 30,537.75 × 7,890.81
  4. Step 4: Simplify right side
    20,364.96x = 240,967,583.08
  5. Step 5: Solve for x
    x = 240,967,583.08/20,364.96
  6. Step 6: Final answer
    x = 11,832.46

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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.