Home / 13,473.40-20,219.70-5,687.80

Finding the Fourth Proportional to 13,473.40, 20,219.70 and 5,687.80

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Solution

The fourth proportional to 13,473.40, 20,219.70 and 5,687.80 is: 8,535.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,473.40 : 20,219.70 = 5,687.80 : x
  2. Step 2: Convert to fraction form
    13,473.40/20,219.70 = 5,687.80/x
  3. Step 3: Cross multiply
    13,473.40x = 20,219.70 × 5,687.80
  4. Step 4: Simplify right side
    13,473.40x = 115,005,609.66
  5. Step 5: Solve for x
    x = 115,005,609.66/13,473.40
  6. Step 6: Final answer
    x = 8,535.75

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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.