Home / 21,660.62-29,892.14-12,714.57

Finding the Fourth Proportional to 21,660.62, 29,892.14 and 12,714.57

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Solution

The fourth proportional to 21,660.62, 29,892.14 and 12,714.57 is: 17,546.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,660.62 : 29,892.14 = 12,714.57 : x
  2. Step 2: Convert to fraction form
    21,660.62/29,892.14 = 12,714.57/x
  3. Step 3: Cross multiply
    21,660.62x = 29,892.14 × 12,714.57
  4. Step 4: Simplify right side
    21,660.62x = 380,065,690.59
  5. Step 5: Solve for x
    x = 380,065,690.59/21,660.62
  6. Step 6: Final answer
    x = 17,546.39

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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.