Home / 12,130.38-16,745.67-8,154.36

Finding the Fourth Proportional to 12,130.38, 16,745.67 and 8,154.36

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Solution

The fourth proportional to 12,130.38, 16,745.67 and 8,154.36 is: 11,256.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.38 : 16,745.67 = 8,154.36 : x
  2. Step 2: Convert to fraction form
    12,130.38/16,745.67 = 8,154.36/x
  3. Step 3: Cross multiply
    12,130.38x = 16,745.67 × 8,154.36
  4. Step 4: Simplify right side
    12,130.38x = 136,550,221.62
  5. Step 5: Solve for x
    x = 136,550,221.62/12,130.38
  6. Step 6: Final answer
    x = 11,256.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.