Home / 21,880.17-30,195.33-12,449.34

Finding the Fourth Proportional to 21,880.17, 30,195.33 and 12,449.34

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Solution

The fourth proportional to 21,880.17, 30,195.33 and 12,449.34 is: 17,180.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,880.17 : 30,195.33 = 12,449.34 : x
  2. Step 2: Convert to fraction form
    21,880.17/30,195.33 = 12,449.34/x
  3. Step 3: Cross multiply
    21,880.17x = 30,195.33 × 12,449.34
  4. Step 4: Simplify right side
    21,880.17x = 375,911,929.58
  5. Step 5: Solve for x
    x = 375,911,929.58/21,880.17
  6. Step 6: Final answer
    x = 17,180.48

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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.