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Finding the Fourth Proportional to 18,446.94, 25,459.11 and 16,872.30

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Solution

The fourth proportional to 18,446.94, 25,459.11 and 16,872.30 is: 23,285.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,446.94 : 25,459.11 = 16,872.30 : x
  2. Step 2: Convert to fraction form
    18,446.94/25,459.11 = 16,872.30/x
  3. Step 3: Cross multiply
    18,446.94x = 25,459.11 × 16,872.30
  4. Step 4: Simplify right side
    18,446.94x = 429,553,741.65
  5. Step 5: Solve for x
    x = 429,553,741.65/18,446.94
  6. Step 6: Final answer
    x = 23,285.91

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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.