Home / 12,654.80-18,989.88-5,729.36

Finding the Fourth Proportional to 12,654.80, 18,989.88 and 5,729.36

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Solution

The fourth proportional to 12,654.80, 18,989.88 and 5,729.36 is: 8,597.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,654.80 : 18,989.88 = 5,729.36 : x
  2. Step 2: Convert to fraction form
    12,654.80/18,989.88 = 5,729.36/x
  3. Step 3: Cross multiply
    12,654.80x = 18,989.88 × 5,729.36
  4. Step 4: Simplify right side
    12,654.80x = 108,799,858.88
  5. Step 5: Solve for x
    x = 108,799,858.88/12,654.80
  6. Step 6: Final answer
    x = 8,597.52

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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.