Home / 21,951.70-30,293.82-12,995.98

Finding the Fourth Proportional to 21,951.70, 30,293.82 and 12,995.98

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Solution

The fourth proportional to 21,951.70, 30,293.82 and 12,995.98 is: 17,934.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,951.70 : 30,293.82 = 12,995.98 : x
  2. Step 2: Convert to fraction form
    21,951.70/30,293.82 = 12,995.98/x
  3. Step 3: Cross multiply
    21,951.70x = 30,293.82 × 12,995.98
  4. Step 4: Simplify right side
    21,951.70x = 393,697,878.84
  5. Step 5: Solve for x
    x = 393,697,878.84/21,951.70
  6. Step 6: Final answer
    x = 17,934.73

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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.