Home / 20,579.75-28,400.62-11,627.07

Finding the Fourth Proportional to 20,579.75, 28,400.62 and 11,627.07

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Solution

The fourth proportional to 20,579.75, 28,400.62 and 11,627.07 is: 16,045.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.75 : 28,400.62 = 11,627.07 : x
  2. Step 2: Convert to fraction form
    20,579.75/28,400.62 = 11,627.07/x
  3. Step 3: Cross multiply
    20,579.75x = 28,400.62 × 11,627.07
  4. Step 4: Simplify right side
    20,579.75x = 330,215,854.78
  5. Step 5: Solve for x
    x = 330,215,854.78/20,579.75
  6. Step 6: Final answer
    x = 16,045.67

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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.