Home / 20,649.34-28,480.23-13,924.31

Finding the Fourth Proportional to 20,649.34, 28,480.23 and 13,924.31

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Solution

The fourth proportional to 20,649.34, 28,480.23 and 13,924.31 is: 19,204.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.34 : 28,480.23 = 13,924.31 : x
  2. Step 2: Convert to fraction form
    20,649.34/28,480.23 = 13,924.31/x
  3. Step 3: Cross multiply
    20,649.34x = 28,480.23 × 13,924.31
  4. Step 4: Simplify right side
    20,649.34x = 396,567,622.59
  5. Step 5: Solve for x
    x = 396,567,622.59/20,649.34
  6. Step 6: Final answer
    x = 19,204.86

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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.