Home / 20,852.29-28,778.23-11,901.15

Finding the Fourth Proportional to 20,852.29, 28,778.23 and 11,901.15

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Solution

The fourth proportional to 20,852.29, 28,778.23 and 11,901.15 is: 16,424.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.29 : 28,778.23 = 11,901.15 : x
  2. Step 2: Convert to fraction form
    20,852.29/28,778.23 = 11,901.15/x
  3. Step 3: Cross multiply
    20,852.29x = 28,778.23 × 11,901.15
  4. Step 4: Simplify right side
    20,852.29x = 342,493,930.27
  5. Step 5: Solve for x
    x = 342,493,930.27/20,852.29
  6. Step 6: Final answer
    x = 16,424.76

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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.