Home / 20,708.46-28,577.76-11,277

Finding the Fourth Proportional to 20,708.46, 28,577.76 and 11,277

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Solution

The fourth proportional to 20,708.46, 28,577.76 and 11,277 is: 15,562.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.46 : 28,577.76 = 11,277 : x
  2. Step 2: Convert to fraction form
    20,708.46/28,577.76 = 11,277/x
  3. Step 3: Cross multiply
    20,708.46x = 28,577.76 × 11,277
  4. Step 4: Simplify right side
    20,708.46x = 322,271,399.52
  5. Step 5: Solve for x
    x = 322,271,399.52/20,708.46
  6. Step 6: Final answer
    x = 15,562.31

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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.