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Finding the Fourth Proportional to 12,495.86, 18,749.90 and 5,474.91

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Solution

The fourth proportional to 12,495.86, 18,749.90 and 5,474.91 is: 8,215.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,495.86 : 18,749.90 = 5,474.91 : x
  2. Step 2: Convert to fraction form
    12,495.86/18,749.90 = 5,474.91/x
  3. Step 3: Cross multiply
    12,495.86x = 18,749.90 × 5,474.91
  4. Step 4: Simplify right side
    12,495.86x = 102,654,015.01
  5. Step 5: Solve for x
    x = 102,654,015.01/12,495.86
  6. Step 6: Final answer
    x = 8,215.04

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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.