Home / 12,964.08-19,448-6,390.66

Finding the Fourth Proportional to 12,964.08, 19,448 and 6,390.66

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Solution

The fourth proportional to 12,964.08, 19,448 and 6,390.66 is: 9,586.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,964.08 : 19,448 = 6,390.66 : x
  2. Step 2: Convert to fraction form
    12,964.08/19,448 = 6,390.66/x
  3. Step 3: Cross multiply
    12,964.08x = 19,448 × 6,390.66
  4. Step 4: Simplify right side
    12,964.08x = 124,285,555.68
  5. Step 5: Solve for x
    x = 124,285,555.68/12,964.08
  6. Step 6: Final answer
    x = 9,586.92

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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.