Home / 20,210.75-27,890.84-11,827.25

Finding the Fourth Proportional to 20,210.75, 27,890.84 and 11,827.25

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Solution

The fourth proportional to 20,210.75, 27,890.84 and 11,827.25 is: 16,321.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.75 : 27,890.84 = 11,827.25 : x
  2. Step 2: Convert to fraction form
    20,210.75/27,890.84 = 11,827.25/x
  3. Step 3: Cross multiply
    20,210.75x = 27,890.84 × 11,827.25
  4. Step 4: Simplify right side
    20,210.75x = 329,871,878.25
  5. Step 5: Solve for x
    x = 329,871,878.25/20,210.75
  6. Step 6: Final answer
    x = 16,321.61

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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.