Home / 18,867.69-28,228.35-13,614.79

Finding the Fourth Proportional to 18,867.69, 28,228.35 and 13,614.79

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Solution

The fourth proportional to 18,867.69, 28,228.35 and 13,614.79 is: 20,369.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.69 : 28,228.35 = 13,614.79 : x
  2. Step 2: Convert to fraction form
    18,867.69/28,228.35 = 13,614.79/x
  3. Step 3: Cross multiply
    18,867.69x = 28,228.35 × 13,614.79
  4. Step 4: Simplify right side
    18,867.69x = 384,323,057.30
  5. Step 5: Solve for x
    x = 384,323,057.30/18,867.69
  6. Step 6: Final answer
    x = 20,369.38

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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.