Home / 20,330.28-28,017.63-13,958.82

Finding the Fourth Proportional to 20,330.28, 28,017.63 and 13,958.82

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Solution

The fourth proportional to 20,330.28, 28,017.63 and 13,958.82 is: 19,236.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.28 : 28,017.63 = 13,958.82 : x
  2. Step 2: Convert to fraction form
    20,330.28/28,017.63 = 13,958.82/x
  3. Step 3: Cross multiply
    20,330.28x = 28,017.63 × 13,958.82
  4. Step 4: Simplify right side
    20,330.28x = 391,093,054.00
  5. Step 5: Solve for x
    x = 391,093,054.00/20,330.28
  6. Step 6: Final answer
    x = 19,236.97

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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.