Home / 20,852.08-28,775.54-11,899.35

Finding the Fourth Proportional to 20,852.08, 28,775.54 and 11,899.35

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Solution

The fourth proportional to 20,852.08, 28,775.54 and 11,899.35 is: 16,420.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.08 : 28,775.54 = 11,899.35 : x
  2. Step 2: Convert to fraction form
    20,852.08/28,775.54 = 11,899.35/x
  3. Step 3: Cross multiply
    20,852.08x = 28,775.54 × 11,899.35
  4. Step 4: Simplify right side
    20,852.08x = 342,410,251.65
  5. Step 5: Solve for x
    x = 342,410,251.65/20,852.08
  6. Step 6: Final answer
    x = 16,420.92

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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.