Home / 13,772.30-20,661.35-7,196.72

Finding the Fourth Proportional to 13,772.30, 20,661.35 and 7,196.72

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Solution

The fourth proportional to 13,772.30, 20,661.35 and 7,196.72 is: 10,796.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.30 : 20,661.35 = 7,196.72 : x
  2. Step 2: Convert to fraction form
    13,772.30/20,661.35 = 7,196.72/x
  3. Step 3: Cross multiply
    13,772.30x = 20,661.35 × 7,196.72
  4. Step 4: Simplify right side
    13,772.30x = 148,693,811.48
  5. Step 5: Solve for x
    x = 148,693,811.48/13,772.30
  6. Step 6: Final answer
    x = 10,796.59

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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.