Home / 20,618.07-28,459.79-14,667

Finding the Fourth Proportional to 20,618.07, 28,459.79 and 14,667

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Solution

The fourth proportional to 20,618.07, 28,459.79 and 14,667 is: 20,245.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.07 : 28,459.79 = 14,667 : x
  2. Step 2: Convert to fraction form
    20,618.07/28,459.79 = 14,667/x
  3. Step 3: Cross multiply
    20,618.07x = 28,459.79 × 14,667
  4. Step 4: Simplify right side
    20,618.07x = 417,419,739.93
  5. Step 5: Solve for x
    x = 417,419,739.93/20,618.07
  6. Step 6: Final answer
    x = 20,245.34

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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.