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Finding the Fourth Proportional to 10,789.08, 14,893.11 and 8,431.98

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Solution

The fourth proportional to 10,789.08, 14,893.11 and 8,431.98 is: 11,639.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,789.08 : 14,893.11 = 8,431.98 : x
  2. Step 2: Convert to fraction form
    10,789.08/14,893.11 = 8,431.98/x
  3. Step 3: Cross multiply
    10,789.08x = 14,893.11 × 8,431.98
  4. Step 4: Simplify right side
    10,789.08x = 125,578,405.66
  5. Step 5: Solve for x
    x = 125,578,405.66/10,789.08
  6. Step 6: Final answer
    x = 11,639.40

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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.