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Finding the Fourth Proportional to 11,145, 16,718.58 and 3,751.32

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Solution

The fourth proportional to 11,145, 16,718.58 and 3,751.32 is: 5,627.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145 : 16,718.58 = 3,751.32 : x
  2. Step 2: Convert to fraction form
    11,145/16,718.58 = 3,751.32/x
  3. Step 3: Cross multiply
    11,145x = 16,718.58 × 3,751.32
  4. Step 4: Simplify right side
    11,145x = 62,716,743.53
  5. Step 5: Solve for x
    x = 62,716,743.53/11,145
  6. Step 6: Final answer
    x = 5,627.34

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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.