Home / 20,692.19-28,555.87-11,740.07

Finding the Fourth Proportional to 20,692.19, 28,555.87 and 11,740.07

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Solution

The fourth proportional to 20,692.19, 28,555.87 and 11,740.07 is: 16,201.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.19 : 28,555.87 = 11,740.07 : x
  2. Step 2: Convert to fraction form
    20,692.19/28,555.87 = 11,740.07/x
  3. Step 3: Cross multiply
    20,692.19x = 28,555.87 × 11,740.07
  4. Step 4: Simplify right side
    20,692.19x = 335,247,912.71
  5. Step 5: Solve for x
    x = 335,247,912.71/20,692.19
  6. Step 6: Final answer
    x = 16,201.66

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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.