Home / 20,993.27-31,489.86-14,399.45

Finding the Fourth Proportional to 20,993.27, 31,489.86 and 14,399.45

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Solution

The fourth proportional to 20,993.27, 31,489.86 and 14,399.45 is: 21,599.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993.27 : 31,489.86 = 14,399.45 : x
  2. Step 2: Convert to fraction form
    20,993.27/31,489.86 = 14,399.45/x
  3. Step 3: Cross multiply
    20,993.27x = 31,489.86 × 14,399.45
  4. Step 4: Simplify right side
    20,993.27x = 453,436,664.58
  5. Step 5: Solve for x
    x = 453,436,664.58/20,993.27
  6. Step 6: Final answer
    x = 21,599.14

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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.