Home / 13,634.80-20,430.60-8,695.60

Finding the Fourth Proportional to 13,634.80, 20,430.60 and 8,695.60

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Solution

The fourth proportional to 13,634.80, 20,430.60 and 8,695.60 is: 13,029.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.80 : 20,430.60 = 8,695.60 : x
  2. Step 2: Convert to fraction form
    13,634.80/20,430.60 = 8,695.60/x
  3. Step 3: Cross multiply
    13,634.80x = 20,430.60 × 8,695.60
  4. Step 4: Simplify right side
    13,634.80x = 177,656,325.36
  5. Step 5: Solve for x
    x = 177,656,325.36/13,634.80
  6. Step 6: Final answer
    x = 13,029.62

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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.