Home / 20,767.60-28,656.84-11,692.72

Finding the Fourth Proportional to 20,767.60, 28,656.84 and 11,692.72

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Solution

The fourth proportional to 20,767.60, 28,656.84 and 11,692.72 is: 16,134.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.60 : 28,656.84 = 11,692.72 : x
  2. Step 2: Convert to fraction form
    20,767.60/28,656.84 = 11,692.72/x
  3. Step 3: Cross multiply
    20,767.60x = 28,656.84 × 11,692.72
  4. Step 4: Simplify right side
    20,767.60x = 335,076,406.20
  5. Step 5: Solve for x
    x = 335,076,406.20/20,767.60
  6. Step 6: Final answer
    x = 16,134.58

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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.