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Finding the Fourth Proportional to 13,189.37, 19,784.05 and 3,955.37

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Solution

The fourth proportional to 13,189.37, 19,784.05 and 3,955.37 is: 5,933.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.37 : 19,784.05 = 3,955.37 : x
  2. Step 2: Convert to fraction form
    13,189.37/19,784.05 = 3,955.37/x
  3. Step 3: Cross multiply
    13,189.37x = 19,784.05 × 3,955.37
  4. Step 4: Simplify right side
    13,189.37x = 78,253,129.04
  5. Step 5: Solve for x
    x = 78,253,129.04/13,189.37
  6. Step 6: Final answer
    x = 5,933.05

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.