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Finding the Fourth Proportional to 11,454.39, 15,807 and 6,418.89

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Solution

The fourth proportional to 11,454.39, 15,807 and 6,418.89 is: 8,858.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,454.39 : 15,807 = 6,418.89 : x
  2. Step 2: Convert to fraction form
    11,454.39/15,807 = 6,418.89/x
  3. Step 3: Cross multiply
    11,454.39x = 15,807 × 6,418.89
  4. Step 4: Simplify right side
    11,454.39x = 101,463,394.23
  5. Step 5: Solve for x
    x = 101,463,394.23/11,454.39
  6. Step 6: Final answer
    x = 8,858.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.