Home / 20,852.70-28,776.96-11,901.42

Finding the Fourth Proportional to 20,852.70, 28,776.96 and 11,901.42

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Solution

The fourth proportional to 20,852.70, 28,776.96 and 11,901.42 is: 16,424.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.70 : 28,776.96 = 11,901.42 : x
  2. Step 2: Convert to fraction form
    20,852.70/28,776.96 = 11,901.42/x
  3. Step 3: Cross multiply
    20,852.70x = 28,776.96 × 11,901.42
  4. Step 4: Simplify right side
    20,852.70x = 342,486,687.28
  5. Step 5: Solve for x
    x = 342,486,687.28/20,852.70
  6. Step 6: Final answer
    x = 16,424.09

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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.