Home / 12,900.47-19,351.71-5,504.99

Finding the Fourth Proportional to 12,900.47, 19,351.71 and 5,504.99

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Solution

The fourth proportional to 12,900.47, 19,351.71 and 5,504.99 is: 8,257.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900.47 : 19,351.71 = 5,504.99 : x
  2. Step 2: Convert to fraction form
    12,900.47/19,351.71 = 5,504.99/x
  3. Step 3: Cross multiply
    12,900.47x = 19,351.71 × 5,504.99
  4. Step 4: Simplify right side
    12,900.47x = 106,530,873.27
  5. Step 5: Solve for x
    x = 106,530,873.27/12,900.47
  6. Step 6: Final answer
    x = 8,257.91

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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.