Home / 12,555.36-18,836.12-8,864.80

Finding the Fourth Proportional to 12,555.36, 18,836.12 and 8,864.80

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Solution

The fourth proportional to 12,555.36, 18,836.12 and 8,864.80 is: 13,299.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.36 : 18,836.12 = 8,864.80 : x
  2. Step 2: Convert to fraction form
    12,555.36/18,836.12 = 8,864.80/x
  3. Step 3: Cross multiply
    12,555.36x = 18,836.12 × 8,864.80
  4. Step 4: Simplify right side
    12,555.36x = 166,978,436.58
  5. Step 5: Solve for x
    x = 166,978,436.58/12,555.36
  6. Step 6: Final answer
    x = 13,299.37

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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.