Home / 20,165.70-30,205.35-13,167.30

Finding the Fourth Proportional to 20,165.70, 30,205.35 and 13,167.30

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Solution

The fourth proportional to 20,165.70, 30,205.35 and 13,167.30 is: 19,722.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.70 : 30,205.35 = 13,167.30 : x
  2. Step 2: Convert to fraction form
    20,165.70/30,205.35 = 13,167.30/x
  3. Step 3: Cross multiply
    20,165.70x = 30,205.35 × 13,167.30
  4. Step 4: Simplify right side
    20,165.70x = 397,722,905.06
  5. Step 5: Solve for x
    x = 397,722,905.06/20,165.70
  6. Step 6: Final answer
    x = 19,722.74

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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.