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Finding the Fourth Proportional to 11,385.66, 17,078.49 and 4,368.90

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Solution

The fourth proportional to 11,385.66, 17,078.49 and 4,368.90 is: 6,553.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.66 : 17,078.49 = 4,368.90 : x
  2. Step 2: Convert to fraction form
    11,385.66/17,078.49 = 4,368.90/x
  3. Step 3: Cross multiply
    11,385.66x = 17,078.49 × 4,368.90
  4. Step 4: Simplify right side
    11,385.66x = 74,614,214.96
  5. Step 5: Solve for x
    x = 74,614,214.96/11,385.66
  6. Step 6: Final answer
    x = 6,553.35

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1.5x scale

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.