Home / 20,907.59-28,852.43-11,475.95

Finding the Fourth Proportional to 20,907.59, 28,852.43 and 11,475.95

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Solution

The fourth proportional to 20,907.59, 28,852.43 and 11,475.95 is: 15,836.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.59 : 28,852.43 = 11,475.95 : x
  2. Step 2: Convert to fraction form
    20,907.59/28,852.43 = 11,475.95/x
  3. Step 3: Cross multiply
    20,907.59x = 28,852.43 × 11,475.95
  4. Step 4: Simplify right side
    20,907.59x = 331,108,842.42
  5. Step 5: Solve for x
    x = 331,108,842.42/20,907.59
  6. Step 6: Final answer
    x = 15,836.78

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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.