Home / 20,852.08-28,774.75-11,900.41

Finding the Fourth Proportional to 20,852.08, 28,774.75 and 11,900.41

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Solution

The fourth proportional to 20,852.08, 28,774.75 and 11,900.41 is: 16,421.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.08 : 28,774.75 = 11,900.41 : x
  2. Step 2: Convert to fraction form
    20,852.08/28,774.75 = 11,900.41/x
  3. Step 3: Cross multiply
    20,852.08x = 28,774.75 × 11,900.41
  4. Step 4: Simplify right side
    20,852.08x = 342,431,322.65
  5. Step 5: Solve for x
    x = 342,431,322.65/20,852.08
  6. Step 6: Final answer
    x = 16,421.93

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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.