Home / 14,134.64-21,212.96-7,121.68

Finding the Fourth Proportional to 14,134.64, 21,212.96 and 7,121.68

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Solution

The fourth proportional to 14,134.64, 21,212.96 and 7,121.68 is: 10,688.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,134.64 : 21,212.96 = 7,121.68 : x
  2. Step 2: Convert to fraction form
    14,134.64/21,212.96 = 7,121.68/x
  3. Step 3: Cross multiply
    14,134.64x = 21,212.96 × 7,121.68
  4. Step 4: Simplify right side
    14,134.64x = 151,071,912.97
  5. Step 5: Solve for x
    x = 151,071,912.97/14,134.64
  6. Step 6: Final answer
    x = 10,688.06

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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.