Home / 13,292.73-19,939.11-12,480.81

Finding the Fourth Proportional to 13,292.73, 19,939.11 and 12,480.81

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Solution

The fourth proportional to 13,292.73, 19,939.11 and 12,480.81 is: 18,721.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,292.73 : 19,939.11 = 12,480.81 : x
  2. Step 2: Convert to fraction form
    13,292.73/19,939.11 = 12,480.81/x
  3. Step 3: Cross multiply
    13,292.73x = 19,939.11 × 12,480.81
  4. Step 4: Simplify right side
    13,292.73x = 248,856,243.48
  5. Step 5: Solve for x
    x = 248,856,243.48/13,292.73
  6. Step 6: Final answer
    x = 18,721.23

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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.