Home / 12,990.73-19,488.14-4,223.60

Finding the Fourth Proportional to 12,990.73, 19,488.14 and 4,223.60

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Solution

The fourth proportional to 12,990.73, 19,488.14 and 4,223.60 is: 6,336.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990.73 : 19,488.14 = 4,223.60 : x
  2. Step 2: Convert to fraction form
    12,990.73/19,488.14 = 4,223.60/x
  3. Step 3: Cross multiply
    12,990.73x = 19,488.14 × 4,223.60
  4. Step 4: Simplify right side
    12,990.73x = 82,310,005.38
  5. Step 5: Solve for x
    x = 82,310,005.38/12,990.73
  6. Step 6: Final answer
    x = 6,336.06

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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.