Home / 20,850.83-28,774.10-11,290.67

Finding the Fourth Proportional to 20,850.83, 28,774.10 and 11,290.67

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Solution

The fourth proportional to 20,850.83, 28,774.10 and 11,290.67 is: 15,581.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.83 : 28,774.10 = 11,290.67 : x
  2. Step 2: Convert to fraction form
    20,850.83/28,774.10 = 11,290.67/x
  3. Step 3: Cross multiply
    20,850.83x = 28,774.10 × 11,290.67
  4. Step 4: Simplify right side
    20,850.83x = 324,878,667.32
  5. Step 5: Solve for x
    x = 324,878,667.32/20,850.83
  6. Step 6: Final answer
    x = 15,581.09

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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.