Home / 20,839.48-28,759.66-12,346.63

Finding the Fourth Proportional to 20,839.48, 28,759.66 and 12,346.63

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Solution

The fourth proportional to 20,839.48, 28,759.66 and 12,346.63 is: 17,039.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.48 : 28,759.66 = 12,346.63 : x
  2. Step 2: Convert to fraction form
    20,839.48/28,759.66 = 12,346.63/x
  3. Step 3: Cross multiply
    20,839.48x = 28,759.66 × 12,346.63
  4. Step 4: Simplify right side
    20,839.48x = 355,084,778.18
  5. Step 5: Solve for x
    x = 355,084,778.18/20,839.48
  6. Step 6: Final answer
    x = 17,039.04

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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.