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Finding the Fourth Proportional to 18,991.94, 26,207.51 and 10,493.96

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Solution

The fourth proportional to 18,991.94, 26,207.51 and 10,493.96 is: 14,480.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991.94 : 26,207.51 = 10,493.96 : x
  2. Step 2: Convert to fraction form
    18,991.94/26,207.51 = 10,493.96/x
  3. Step 3: Cross multiply
    18,991.94x = 26,207.51 × 10,493.96
  4. Step 4: Simplify right side
    18,991.94x = 275,020,378.13
  5. Step 5: Solve for x
    x = 275,020,378.13/18,991.94
  6. Step 6: Final answer
    x = 14,480.90

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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.