Home / 12,544.47-18,815.75-4,643.28

Finding the Fourth Proportional to 12,544.47, 18,815.75 and 4,643.28

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Solution

The fourth proportional to 12,544.47, 18,815.75 and 4,643.28 is: 6,964.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,544.47 : 18,815.75 = 4,643.28 : x
  2. Step 2: Convert to fraction form
    12,544.47/18,815.75 = 4,643.28/x
  3. Step 3: Cross multiply
    12,544.47x = 18,815.75 × 4,643.28
  4. Step 4: Simplify right side
    12,544.47x = 87,366,789.86
  5. Step 5: Solve for x
    x = 87,366,789.86/12,544.47
  6. Step 6: Final answer
    x = 6,964.56

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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.