Home / 20,903.08-31,339.32-7,755.52

Finding the Fourth Proportional to 20,903.08, 31,339.32 and 7,755.52

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Solution

The fourth proportional to 20,903.08, 31,339.32 and 7,755.52 is: 11,627.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.08 : 31,339.32 = 7,755.52 : x
  2. Step 2: Convert to fraction form
    20,903.08/31,339.32 = 7,755.52/x
  3. Step 3: Cross multiply
    20,903.08x = 31,339.32 × 7,755.52
  4. Step 4: Simplify right side
    20,903.08x = 243,052,723.05
  5. Step 5: Solve for x
    x = 243,052,723.05/20,903.08
  6. Step 6: Final answer
    x = 11,627.60

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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.