Home / 20,698.58-28,563.21-11,267.15

Finding the Fourth Proportional to 20,698.58, 28,563.21 and 11,267.15

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Solution

The fourth proportional to 20,698.58, 28,563.21 and 11,267.15 is: 15,548.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.58 : 28,563.21 = 11,267.15 : x
  2. Step 2: Convert to fraction form
    20,698.58/28,563.21 = 11,267.15/x
  3. Step 3: Cross multiply
    20,698.58x = 28,563.21 × 11,267.15
  4. Step 4: Simplify right side
    20,698.58x = 321,825,828.74
  5. Step 5: Solve for x
    x = 321,825,828.74/20,698.58
  6. Step 6: Final answer
    x = 15,548.21

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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.