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Finding the Fourth Proportional to 13,731.03, 18,952.41 and 8,697.69

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Solution

The fourth proportional to 13,731.03, 18,952.41 and 8,697.69 is: 12,005.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.03 : 18,952.41 = 8,697.69 : x
  2. Step 2: Convert to fraction form
    13,731.03/18,952.41 = 8,697.69/x
  3. Step 3: Cross multiply
    13,731.03x = 18,952.41 × 8,697.69
  4. Step 4: Simplify right side
    13,731.03x = 164,842,186.93
  5. Step 5: Solve for x
    x = 164,842,186.93/13,731.03
  6. Step 6: Final answer
    x = 12,005.09

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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.