Home / 12,645.80-18,964.62-4,210.06

Finding the Fourth Proportional to 12,645.80, 18,964.62 and 4,210.06

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Solution

The fourth proportional to 12,645.80, 18,964.62 and 4,210.06 is: 6,313.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.80 : 18,964.62 = 4,210.06 : x
  2. Step 2: Convert to fraction form
    12,645.80/18,964.62 = 4,210.06/x
  3. Step 3: Cross multiply
    12,645.80x = 18,964.62 × 4,210.06
  4. Step 4: Simplify right side
    12,645.80x = 79,842,188.08
  5. Step 5: Solve for x
    x = 79,842,188.08/12,645.80
  6. Step 6: Final answer
    x = 6,313.73

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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.