Home / 20,845.35-28,763.91-11,892.33

Finding the Fourth Proportional to 20,845.35, 28,763.91 and 11,892.33

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Solution

The fourth proportional to 20,845.35, 28,763.91 and 11,892.33 is: 16,409.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.35 : 28,763.91 = 11,892.33 : x
  2. Step 2: Convert to fraction form
    20,845.35/28,763.91 = 11,892.33/x
  3. Step 3: Cross multiply
    20,845.35x = 28,763.91 × 11,892.33
  4. Step 4: Simplify right side
    20,845.35x = 342,069,909.81
  5. Step 5: Solve for x
    x = 342,069,909.81/20,845.35
  6. Step 6: Final answer
    x = 16,409.89

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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.