Home / 20,649.59-28,480.57-13,924.56

Finding the Fourth Proportional to 20,649.59, 28,480.57 and 13,924.56

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Solution

The fourth proportional to 20,649.59, 28,480.57 and 13,924.56 is: 19,205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.59 : 28,480.57 = 13,924.56 : x
  2. Step 2: Convert to fraction form
    20,649.59/28,480.57 = 13,924.56/x
  3. Step 3: Cross multiply
    20,649.59x = 28,480.57 × 13,924.56
  4. Step 4: Simplify right side
    20,649.59x = 396,579,405.80
  5. Step 5: Solve for x
    x = 396,579,405.80/20,649.59
  6. Step 6: Final answer
    x = 19,205.20

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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.