Home / 20,579.69-28,401.08-11,627.57

Finding the Fourth Proportional to 20,579.69, 28,401.08 and 11,627.57

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Solution

The fourth proportional to 20,579.69, 28,401.08 and 11,627.57 is: 16,046.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.69 : 28,401.08 = 11,627.57 : x
  2. Step 2: Convert to fraction form
    20,579.69/28,401.08 = 11,627.57/x
  3. Step 3: Cross multiply
    20,579.69x = 28,401.08 × 11,627.57
  4. Step 4: Simplify right side
    20,579.69x = 330,235,345.63
  5. Step 5: Solve for x
    x = 330,235,345.63/20,579.69
  6. Step 6: Final answer
    x = 16,046.67

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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.