Home / 20,620.82-28,463.58-14,669.75

Finding the Fourth Proportional to 20,620.82, 28,463.58 and 14,669.75

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Solution

The fourth proportional to 20,620.82, 28,463.58 and 14,669.75 is: 20,249.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.82 : 28,463.58 = 14,669.75 : x
  2. Step 2: Convert to fraction form
    20,620.82/28,463.58 = 14,669.75/x
  3. Step 3: Cross multiply
    20,620.82x = 28,463.58 × 14,669.75
  4. Step 4: Simplify right side
    20,620.82x = 417,553,460.39
  5. Step 5: Solve for x
    x = 417,553,460.39/20,620.82
  6. Step 6: Final answer
    x = 20,249.12

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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.