Home / 20,708.49-28,577.52-11,277.21

Finding the Fourth Proportional to 20,708.49, 28,577.52 and 11,277.21

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Solution

The fourth proportional to 20,708.49, 28,577.52 and 11,277.21 is: 15,562.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.49 : 28,577.52 = 11,277.21 : x
  2. Step 2: Convert to fraction form
    20,708.49/28,577.52 = 11,277.21/x
  3. Step 3: Cross multiply
    20,708.49x = 28,577.52 × 11,277.21
  4. Step 4: Simplify right side
    20,708.49x = 322,274,694.32
  5. Step 5: Solve for x
    x = 322,274,694.32/20,708.49
  6. Step 6: Final answer
    x = 15,562.44

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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.