Home / 20,877.35-28,808.87-11,924.82

Finding the Fourth Proportional to 20,877.35, 28,808.87 and 11,924.82

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Solution

The fourth proportional to 20,877.35, 28,808.87 and 11,924.82 is: 16,455.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.35 : 28,808.87 = 11,924.82 : x
  2. Step 2: Convert to fraction form
    20,877.35/28,808.87 = 11,924.82/x
  3. Step 3: Cross multiply
    20,877.35x = 28,808.87 × 11,924.82
  4. Step 4: Simplify right side
    20,877.35x = 343,540,529.53
  5. Step 5: Solve for x
    x = 343,540,529.53/20,877.35
  6. Step 6: Final answer
    x = 16,455.18

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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.