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Finding the Fourth Proportional to 12,995.73, 19,493.60 and 4,230.65

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Solution

The fourth proportional to 12,995.73, 19,493.60 and 4,230.65 is: 6,345.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,995.73 : 19,493.60 = 4,230.65 : x
  2. Step 2: Convert to fraction form
    12,995.73/19,493.60 = 4,230.65/x
  3. Step 3: Cross multiply
    12,995.73x = 19,493.60 × 4,230.65
  4. Step 4: Simplify right side
    12,995.73x = 82,470,598.84
  5. Step 5: Solve for x
    x = 82,470,598.84/12,995.73
  6. Step 6: Final answer
    x = 6,345.98

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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.