Home / 13,580.82-20,373.06-12,760.71

Finding the Fourth Proportional to 13,580.82, 20,373.06 and 12,760.71

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Solution

The fourth proportional to 13,580.82, 20,373.06 and 12,760.71 is: 19,142.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.82 : 20,373.06 = 12,760.71 : x
  2. Step 2: Convert to fraction form
    13,580.82/20,373.06 = 12,760.71/x
  3. Step 3: Cross multiply
    13,580.82x = 20,373.06 × 12,760.71
  4. Step 4: Simplify right side
    13,580.82x = 259,974,710.47
  5. Step 5: Solve for x
    x = 259,974,710.47/13,580.82
  6. Step 6: Final answer
    x = 19,142.78

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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.