Home / 14,271.20-19,665.96-11,121.92

Finding the Fourth Proportional to 14,271.20, 19,665.96 and 11,121.92

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Solution

The fourth proportional to 14,271.20, 19,665.96 and 11,121.92 is: 15,326.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,271.20 : 19,665.96 = 11,121.92 : x
  2. Step 2: Convert to fraction form
    14,271.20/19,665.96 = 11,121.92/x
  3. Step 3: Cross multiply
    14,271.20x = 19,665.96 × 11,121.92
  4. Step 4: Simplify right side
    14,271.20x = 218,723,233.84
  5. Step 5: Solve for x
    x = 218,723,233.84/14,271.20
  6. Step 6: Final answer
    x = 15,326.20

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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.