Home / 21,740.76-30,007.62-12,314.88

Finding the Fourth Proportional to 21,740.76, 30,007.62 and 12,314.88

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Solution

The fourth proportional to 21,740.76, 30,007.62 and 12,314.88 is: 16,997.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,740.76 : 30,007.62 = 12,314.88 : x
  2. Step 2: Convert to fraction form
    21,740.76/30,007.62 = 12,314.88/x
  3. Step 3: Cross multiply
    21,740.76x = 30,007.62 × 12,314.88
  4. Step 4: Simplify right side
    21,740.76x = 369,540,239.39
  5. Step 5: Solve for x
    x = 369,540,239.39/21,740.76
  6. Step 6: Final answer
    x = 16,997.58

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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.