Home / 13,630.99-20,435.55-7,704.22

Finding the Fourth Proportional to 13,630.99, 20,435.55 and 7,704.22

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Solution

The fourth proportional to 13,630.99, 20,435.55 and 7,704.22 is: 11,550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.99 : 20,435.55 = 7,704.22 : x
  2. Step 2: Convert to fraction form
    13,630.99/20,435.55 = 7,704.22/x
  3. Step 3: Cross multiply
    13,630.99x = 20,435.55 × 7,704.22
  4. Step 4: Simplify right side
    13,630.99x = 157,439,973.02
  5. Step 5: Solve for x
    x = 157,439,973.02/13,630.99
  6. Step 6: Final answer
    x = 11,550.15

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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.