Home / 12,525.12-18,787.68-3,290.88

Finding the Fourth Proportional to 12,525.12, 18,787.68 and 3,290.88

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Solution

The fourth proportional to 12,525.12, 18,787.68 and 3,290.88 is: 4,936.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,525.12 : 18,787.68 = 3,290.88 : x
  2. Step 2: Convert to fraction form
    12,525.12/18,787.68 = 3,290.88/x
  3. Step 3: Cross multiply
    12,525.12x = 18,787.68 × 3,290.88
  4. Step 4: Simplify right side
    12,525.12x = 61,828,000.36
  5. Step 5: Solve for x
    x = 61,828,000.36/12,525.12
  6. Step 6: Final answer
    x = 4,936.32

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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.