Home / 21,880.63-30,195.38-12,449.19

Finding the Fourth Proportional to 21,880.63, 30,195.38 and 12,449.19

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Solution

The fourth proportional to 21,880.63, 30,195.38 and 12,449.19 is: 17,179.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,880.63 : 30,195.38 = 12,449.19 : x
  2. Step 2: Convert to fraction form
    21,880.63/30,195.38 = 12,449.19/x
  3. Step 3: Cross multiply
    21,880.63x = 30,195.38 × 12,449.19
  4. Step 4: Simplify right side
    21,880.63x = 375,908,167.10
  5. Step 5: Solve for x
    x = 375,908,167.10/21,880.63
  6. Step 6: Final answer
    x = 17,179.95

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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.