Home / 14,221.12-21,362.64-13,754.56

Finding the Fourth Proportional to 14,221.12, 21,362.64 and 13,754.56

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Solution

The fourth proportional to 14,221.12, 21,362.64 and 13,754.56 is: 20,661.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,221.12 : 21,362.64 = 13,754.56 : x
  2. Step 2: Convert to fraction form
    14,221.12/21,362.64 = 13,754.56/x
  3. Step 3: Cross multiply
    14,221.12x = 21,362.64 × 13,754.56
  4. Step 4: Simplify right side
    14,221.12x = 293,833,713.64
  5. Step 5: Solve for x
    x = 293,833,713.64/14,221.12
  6. Step 6: Final answer
    x = 20,661.78

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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.