Home / 18,958.91-28,438.29-5,809.59

Finding the Fourth Proportional to 18,958.91, 28,438.29 and 5,809.59

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Solution

The fourth proportional to 18,958.91, 28,438.29 and 5,809.59 is: 8,714.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,958.91 : 28,438.29 = 5,809.59 : x
  2. Step 2: Convert to fraction form
    18,958.91/28,438.29 = 5,809.59/x
  3. Step 3: Cross multiply
    18,958.91x = 28,438.29 × 5,809.59
  4. Step 4: Simplify right side
    18,958.91x = 165,214,805.20
  5. Step 5: Solve for x
    x = 165,214,805.20/18,958.91
  6. Step 6: Final answer
    x = 8,714.36

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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.