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Finding the Fourth Proportional to 18,187.88, 24,990.49 and 14,455.40

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Solution

The fourth proportional to 18,187.88, 24,990.49 and 14,455.40 is: 19,861.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,187.88 : 24,990.49 = 14,455.40 : x
  2. Step 2: Convert to fraction form
    18,187.88/24,990.49 = 14,455.40/x
  3. Step 3: Cross multiply
    18,187.88x = 24,990.49 × 14,455.40
  4. Step 4: Simplify right side
    18,187.88x = 361,247,529.15
  5. Step 5: Solve for x
    x = 361,247,529.15/18,187.88
  6. Step 6: Final answer
    x = 19,861.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.