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Finding the Fourth Proportional to 16,991.46, 25,495.53 and 7,638.08

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Solution

The fourth proportional to 16,991.46, 25,495.53 and 7,638.08 is: 11,460.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,991.46 : 25,495.53 = 7,638.08 : x
  2. Step 2: Convert to fraction form
    16,991.46/25,495.53 = 7,638.08/x
  3. Step 3: Cross multiply
    16,991.46x = 25,495.53 × 7,638.08
  4. Step 4: Simplify right side
    16,991.46x = 194,736,770.30
  5. Step 5: Solve for x
    x = 194,736,770.30/16,991.46
  6. Step 6: Final answer
    x = 11,460.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.