Home / 12,743.52-19,106.55-6,491.43

Finding the Fourth Proportional to 12,743.52, 19,106.55 and 6,491.43

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Solution

The fourth proportional to 12,743.52, 19,106.55 and 6,491.43 is: 9,732.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743.52 : 19,106.55 = 6,491.43 : x
  2. Step 2: Convert to fraction form
    12,743.52/19,106.55 = 6,491.43/x
  3. Step 3: Cross multiply
    12,743.52x = 19,106.55 × 6,491.43
  4. Step 4: Simplify right side
    12,743.52x = 124,028,831.87
  5. Step 5: Solve for x
    x = 124,028,831.87/12,743.52
  6. Step 6: Final answer
    x = 9,732.70

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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.