Home / 20,825.89-28,739.96-11,265.97

Finding the Fourth Proportional to 20,825.89, 28,739.96 and 11,265.97

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Solution

The fourth proportional to 20,825.89, 28,739.96 and 11,265.97 is: 15,547.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.89 : 28,739.96 = 11,265.97 : x
  2. Step 2: Convert to fraction form
    20,825.89/28,739.96 = 11,265.97/x
  3. Step 3: Cross multiply
    20,825.89x = 28,739.96 × 11,265.97
  4. Step 4: Simplify right side
    20,825.89x = 323,783,527.16
  5. Step 5: Solve for x
    x = 323,783,527.16/20,825.89
  6. Step 6: Final answer
    x = 15,547.16

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1.5x scale

Why These Related Problems?

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