Home / 20,579.70-28,400.49-11,627.40

Finding the Fourth Proportional to 20,579.70, 28,400.49 and 11,627.40

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Solution

The fourth proportional to 20,579.70, 28,400.49 and 11,627.40 is: 16,046.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.70 : 28,400.49 = 11,627.40 : x
  2. Step 2: Convert to fraction form
    20,579.70/28,400.49 = 11,627.40/x
  3. Step 3: Cross multiply
    20,579.70x = 28,400.49 × 11,627.40
  4. Step 4: Simplify right side
    20,579.70x = 330,223,857.43
  5. Step 5: Solve for x
    x = 330,223,857.43/20,579.70
  6. Step 6: Final answer
    x = 16,046.10

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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.