Home / 20,938.56-28,895.76-11,507.37

Finding the Fourth Proportional to 20,938.56, 28,895.76 and 11,507.37

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Solution

The fourth proportional to 20,938.56, 28,895.76 and 11,507.37 is: 15,880.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.56 : 28,895.76 = 11,507.37 : x
  2. Step 2: Convert to fraction form
    20,938.56/28,895.76 = 11,507.37/x
  3. Step 3: Cross multiply
    20,938.56x = 28,895.76 × 11,507.37
  4. Step 4: Simplify right side
    20,938.56x = 332,514,201.75
  5. Step 5: Solve for x
    x = 332,514,201.75/20,938.56
  6. Step 6: Final answer
    x = 15,880.47

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.