Home / 14,135.12-21,195.96-5,811.92

Finding the Fourth Proportional to 14,135.12, 21,195.96 and 5,811.92

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Solution

The fourth proportional to 14,135.12, 21,195.96 and 5,811.92 is: 8,715.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,135.12 : 21,195.96 = 5,811.92 : x
  2. Step 2: Convert to fraction form
    14,135.12/21,195.96 = 5,811.92/x
  3. Step 3: Cross multiply
    14,135.12x = 21,195.96 × 5,811.92
  4. Step 4: Simplify right side
    14,135.12x = 123,189,223.84
  5. Step 5: Solve for x
    x = 123,189,223.84/14,135.12
  6. Step 6: Final answer
    x = 8,715.12

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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.