Home / 18,792.12-25,921.86-12,418.80

Finding the Fourth Proportional to 18,792.12, 25,921.86 and 12,418.80

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Solution

The fourth proportional to 18,792.12, 25,921.86 and 12,418.80 is: 17,130.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.12 : 25,921.86 = 12,418.80 : x
  2. Step 2: Convert to fraction form
    18,792.12/25,921.86 = 12,418.80/x
  3. Step 3: Cross multiply
    18,792.12x = 25,921.86 × 12,418.80
  4. Step 4: Simplify right side
    18,792.12x = 321,918,394.97
  5. Step 5: Solve for x
    x = 321,918,394.97/18,792.12
  6. Step 6: Final answer
    x = 17,130.50

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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.