Home / 12,137.64-18,206.40-6,939.84

Finding the Fourth Proportional to 12,137.64, 18,206.40 and 6,939.84

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Solution

The fourth proportional to 12,137.64, 18,206.40 and 6,939.84 is: 10,409.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137.64 : 18,206.40 = 6,939.84 : x
  2. Step 2: Convert to fraction form
    12,137.64/18,206.40 = 6,939.84/x
  3. Step 3: Cross multiply
    12,137.64x = 18,206.40 × 6,939.84
  4. Step 4: Simplify right side
    12,137.64x = 126,349,502.98
  5. Step 5: Solve for x
    x = 126,349,502.98/12,137.64
  6. Step 6: Final answer
    x = 10,409.73

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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.