Home / 18,979.40-28,464.18-5,649.26

Finding the Fourth Proportional to 18,979.40, 28,464.18 and 5,649.26

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Solution

The fourth proportional to 18,979.40, 28,464.18 and 5,649.26 is: 8,472.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.40 : 28,464.18 = 5,649.26 : x
  2. Step 2: Convert to fraction form
    18,979.40/28,464.18 = 5,649.26/x
  3. Step 3: Cross multiply
    18,979.40x = 28,464.18 × 5,649.26
  4. Step 4: Simplify right side
    18,979.40x = 160,801,553.51
  5. Step 5: Solve for x
    x = 160,801,553.51/18,979.40
  6. Step 6: Final answer
    x = 8,472.43

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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.