Home / 20,907.96-28,852.11-11,475.92

Finding the Fourth Proportional to 20,907.96, 28,852.11 and 11,475.92

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Solution

The fourth proportional to 20,907.96, 28,852.11 and 11,475.92 is: 15,836.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.96 : 28,852.11 = 11,475.92 : x
  2. Step 2: Convert to fraction form
    20,907.96/28,852.11 = 11,475.92/x
  3. Step 3: Cross multiply
    20,907.96x = 28,852.11 × 11,475.92
  4. Step 4: Simplify right side
    20,907.96x = 331,104,361.93
  5. Step 5: Solve for x
    x = 331,104,361.93/20,907.96
  6. Step 6: Final answer
    x = 15,836.28

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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.