Home / 13,923.40-20,933.70-13,631.80

Finding the Fourth Proportional to 13,923.40, 20,933.70 and 13,631.80

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Solution

The fourth proportional to 13,923.40, 20,933.70 and 13,631.80 is: 20,495.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,923.40 : 20,933.70 = 13,631.80 : x
  2. Step 2: Convert to fraction form
    13,923.40/20,933.70 = 13,631.80/x
  3. Step 3: Cross multiply
    13,923.40x = 20,933.70 × 13,631.80
  4. Step 4: Simplify right side
    13,923.40x = 285,364,011.66
  5. Step 5: Solve for x
    x = 285,364,011.66/13,923.40
  6. Step 6: Final answer
    x = 20,495.28

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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.