Home / 19,905.55-27,469.60-11,947.75

Finding the Fourth Proportional to 19,905.55, 27,469.60 and 11,947.75

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Solution

The fourth proportional to 19,905.55, 27,469.60 and 11,947.75 is: 16,487.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.55 : 27,469.60 = 11,947.75 : x
  2. Step 2: Convert to fraction form
    19,905.55/27,469.60 = 11,947.75/x
  3. Step 3: Cross multiply
    19,905.55x = 27,469.60 × 11,947.75
  4. Step 4: Simplify right side
    19,905.55x = 328,199,913.40
  5. Step 5: Solve for x
    x = 328,199,913.40/19,905.55
  6. Step 6: Final answer
    x = 16,487.86

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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.