Home / 21,880.98-30,195.90-12,449.54

Finding the Fourth Proportional to 21,880.98, 30,195.90 and 12,449.54

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Solution

The fourth proportional to 21,880.98, 30,195.90 and 12,449.54 is: 17,180.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,880.98 : 30,195.90 = 12,449.54 : x
  2. Step 2: Convert to fraction form
    21,880.98/30,195.90 = 12,449.54/x
  3. Step 3: Cross multiply
    21,880.98x = 30,195.90 × 12,449.54
  4. Step 4: Simplify right side
    21,880.98x = 375,925,140.38
  5. Step 5: Solve for x
    x = 375,925,140.38/21,880.98
  6. Step 6: Final answer
    x = 17,180.45

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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.