Home / 21,880.86-30,194.46-12,449.22

Finding the Fourth Proportional to 21,880.86, 30,194.46 and 12,449.22

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Solution

The fourth proportional to 21,880.86, 30,194.46 and 12,449.22 is: 17,179.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,880.86 : 30,194.46 = 12,449.22 : x
  2. Step 2: Convert to fraction form
    21,880.86/30,194.46 = 12,449.22/x
  3. Step 3: Cross multiply
    21,880.86x = 30,194.46 × 12,449.22
  4. Step 4: Simplify right side
    21,880.86x = 375,897,475.32
  5. Step 5: Solve for x
    x = 375,897,475.32/21,880.86
  6. Step 6: Final answer
    x = 17,179.28

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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.