Home / 13,385.40-20,078.31-5,069.34

Finding the Fourth Proportional to 13,385.40, 20,078.31 and 5,069.34

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Solution

The fourth proportional to 13,385.40, 20,078.31 and 5,069.34 is: 7,604.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.40 : 20,078.31 = 5,069.34 : x
  2. Step 2: Convert to fraction form
    13,385.40/20,078.31 = 5,069.34/x
  3. Step 3: Cross multiply
    13,385.40x = 20,078.31 × 5,069.34
  4. Step 4: Simplify right side
    13,385.40x = 101,783,780.02
  5. Step 5: Solve for x
    x = 101,783,780.02/13,385.40
  6. Step 6: Final answer
    x = 7,604.09

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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.