Home / 13,923.40-20,885.05-3,393.30

Finding the Fourth Proportional to 13,923.40, 20,885.05 and 3,393.30

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Solution

The fourth proportional to 13,923.40, 20,885.05 and 3,393.30 is: 5,089.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,923.40 : 20,885.05 = 3,393.30 : x
  2. Step 2: Convert to fraction form
    13,923.40/20,885.05 = 3,393.30/x
  3. Step 3: Cross multiply
    13,923.40x = 20,885.05 × 3,393.30
  4. Step 4: Simplify right side
    13,923.40x = 70,869,240.17
  5. Step 5: Solve for x
    x = 70,869,240.17/13,923.40
  6. Step 6: Final answer
    x = 5,089.94

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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.