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Finding the Fourth Proportional to 12,473.87, 18,710.76 and 3,239.87

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Solution

The fourth proportional to 12,473.87, 18,710.76 and 3,239.87 is: 4,859.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,473.87 : 18,710.76 = 3,239.87 : x
  2. Step 2: Convert to fraction form
    12,473.87/18,710.76 = 3,239.87/x
  3. Step 3: Cross multiply
    12,473.87x = 18,710.76 × 3,239.87
  4. Step 4: Simplify right side
    12,473.87x = 60,620,430.00
  5. Step 5: Solve for x
    x = 60,620,430.00/12,473.87
  6. Step 6: Final answer
    x = 4,859.79

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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.