Home / 12,816.30-17,660.25-9,453.80

Finding the Fourth Proportional to 12,816.30, 17,660.25 and 9,453.80

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Solution

The fourth proportional to 12,816.30, 17,660.25 and 9,453.80 is: 13,026.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,816.30 : 17,660.25 = 9,453.80 : x
  2. Step 2: Convert to fraction form
    12,816.30/17,660.25 = 9,453.80/x
  3. Step 3: Cross multiply
    12,816.30x = 17,660.25 × 9,453.80
  4. Step 4: Simplify right side
    12,816.30x = 166,956,383.15
  5. Step 5: Solve for x
    x = 166,956,383.15/12,816.30
  6. Step 6: Final answer
    x = 13,026.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.