Home / 12,990.58-19,488.46-3,633.28

Finding the Fourth Proportional to 12,990.58, 19,488.46 and 3,633.28

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Solution

The fourth proportional to 12,990.58, 19,488.46 and 3,633.28 is: 5,450.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990.58 : 19,488.46 = 3,633.28 : x
  2. Step 2: Convert to fraction form
    12,990.58/19,488.46 = 3,633.28/x
  3. Step 3: Cross multiply
    12,990.58x = 19,488.46 × 3,633.28
  4. Step 4: Simplify right side
    12,990.58x = 70,807,031.95
  5. Step 5: Solve for x
    x = 70,807,031.95/12,990.58
  6. Step 6: Final answer
    x = 5,450.64

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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.