Home / 12,714.49-17,541.92-7,680.20

Finding the Fourth Proportional to 12,714.49, 17,541.92 and 7,680.20

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Solution

The fourth proportional to 12,714.49, 17,541.92 and 7,680.20 is: 10,596.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,714.49 : 17,541.92 = 7,680.20 : x
  2. Step 2: Convert to fraction form
    12,714.49/17,541.92 = 7,680.20/x
  3. Step 3: Cross multiply
    12,714.49x = 17,541.92 × 7,680.20
  4. Step 4: Simplify right side
    12,714.49x = 134,725,415.58
  5. Step 5: Solve for x
    x = 134,725,415.58/12,714.49
  6. Step 6: Final answer
    x = 10,596.21

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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.