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Finding the Fourth Proportional to 10,137.89, 13,983.03 and 8,791.08

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Solution

The fourth proportional to 10,137.89, 13,983.03 and 8,791.08 is: 12,125.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,137.89 : 13,983.03 = 8,791.08 : x
  2. Step 2: Convert to fraction form
    10,137.89/13,983.03 = 8,791.08/x
  3. Step 3: Cross multiply
    10,137.89x = 13,983.03 × 8,791.08
  4. Step 4: Simplify right side
    10,137.89x = 122,925,935.37
  5. Step 5: Solve for x
    x = 122,925,935.37/10,137.89
  6. Step 6: Final answer
    x = 12,125.40

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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.