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Finding the Fourth Proportional to 18,965.16, 26,165.67 and 12,254.73

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Solution

The fourth proportional to 18,965.16, 26,165.67 and 12,254.73 is: 16,907.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.16 : 26,165.67 = 12,254.73 : x
  2. Step 2: Convert to fraction form
    18,965.16/26,165.67 = 12,254.73/x
  3. Step 3: Cross multiply
    18,965.16x = 26,165.67 × 12,254.73
  4. Step 4: Simplify right side
    18,965.16x = 320,653,221.12
  5. Step 5: Solve for x
    x = 320,653,221.12/18,965.16
  6. Step 6: Final answer
    x = 16,907.49

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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.