Home / 20,169.40-27,829.70-11,784.28

Finding the Fourth Proportional to 20,169.40, 27,829.70 and 11,784.28

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Solution

The fourth proportional to 20,169.40, 27,829.70 and 11,784.28 is: 16,259.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.40 : 27,829.70 = 11,784.28 : x
  2. Step 2: Convert to fraction form
    20,169.40/27,829.70 = 11,784.28/x
  3. Step 3: Cross multiply
    20,169.40x = 27,829.70 × 11,784.28
  4. Step 4: Simplify right side
    20,169.40x = 327,952,977.12
  5. Step 5: Solve for x
    x = 327,952,977.12/20,169.40
  6. Step 6: Final answer
    x = 16,259.93

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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.