Home / 13,180.92-19,638.27-12,553.98

Finding the Fourth Proportional to 13,180.92, 19,638.27 and 12,553.98

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Solution

The fourth proportional to 13,180.92, 19,638.27 and 12,553.98 is: 18,704.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.92 : 19,638.27 = 12,553.98 : x
  2. Step 2: Convert to fraction form
    13,180.92/19,638.27 = 12,553.98/x
  3. Step 3: Cross multiply
    13,180.92x = 19,638.27 × 12,553.98
  4. Step 4: Simplify right side
    13,180.92x = 246,538,448.81
  5. Step 5: Solve for x
    x = 246,538,448.81/13,180.92
  6. Step 6: Final answer
    x = 18,704.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.