Home / 20,692.08-28,555.14-11,260.68

Finding the Fourth Proportional to 20,692.08, 28,555.14 and 11,260.68

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Solution

The fourth proportional to 20,692.08, 28,555.14 and 11,260.68 is: 15,539.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.08 : 28,555.14 = 11,260.68 : x
  2. Step 2: Convert to fraction form
    20,692.08/28,555.14 = 11,260.68/x
  3. Step 3: Cross multiply
    20,692.08x = 28,555.14 × 11,260.68
  4. Step 4: Simplify right side
    20,692.08x = 321,550,293.90
  5. Step 5: Solve for x
    x = 321,550,293.90/20,692.08
  6. Step 6: Final answer
    x = 15,539.78

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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.