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Finding the Fourth Proportional to 10,491.73, 15,743.07 and 4,256.35

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Solution

The fourth proportional to 10,491.73, 15,743.07 and 4,256.35 is: 6,386.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,491.73 : 15,743.07 = 4,256.35 : x
  2. Step 2: Convert to fraction form
    10,491.73/15,743.07 = 4,256.35/x
  3. Step 3: Cross multiply
    10,491.73x = 15,743.07 × 4,256.35
  4. Step 4: Simplify right side
    10,491.73x = 67,008,015.99
  5. Step 5: Solve for x
    x = 67,008,015.99/10,491.73
  6. Step 6: Final answer
    x = 6,386.75

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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.