Home / 20,284.56-30,378.96-14,021.28

Finding the Fourth Proportional to 20,284.56, 30,378.96 and 14,021.28

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Solution

The fourth proportional to 20,284.56, 30,378.96 and 14,021.28 is: 20,998.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.56 : 30,378.96 = 14,021.28 : x
  2. Step 2: Convert to fraction form
    20,284.56/30,378.96 = 14,021.28/x
  3. Step 3: Cross multiply
    20,284.56x = 30,378.96 × 14,021.28
  4. Step 4: Simplify right side
    20,284.56x = 425,951,904.27
  5. Step 5: Solve for x
    x = 425,951,904.27/20,284.56
  6. Step 6: Final answer
    x = 20,998.82

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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.