Home / 20,938.96-31,409.82-9,252.28

Finding the Fourth Proportional to 20,938.96, 31,409.82 and 9,252.28

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Solution

The fourth proportional to 20,938.96, 31,409.82 and 9,252.28 is: 13,879.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.96 : 31,409.82 = 9,252.28 : x
  2. Step 2: Convert to fraction form
    20,938.96/31,409.82 = 9,252.28/x
  3. Step 3: Cross multiply
    20,938.96x = 31,409.82 × 9,252.28
  4. Step 4: Simplify right side
    20,938.96x = 290,612,449.39
  5. Step 5: Solve for x
    x = 290,612,449.39/20,938.96
  6. Step 6: Final answer
    x = 13,879.03

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1.5x scale

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.