Home / 15,936.53-21,995.78-12,770.85

Finding the Fourth Proportional to 15,936.53, 21,995.78 and 12,770.85

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Solution

The fourth proportional to 15,936.53, 21,995.78 and 12,770.85 is: 17,626.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,936.53 : 21,995.78 = 12,770.85 : x
  2. Step 2: Convert to fraction form
    15,936.53/21,995.78 = 12,770.85/x
  3. Step 3: Cross multiply
    15,936.53x = 21,995.78 × 12,770.85
  4. Step 4: Simplify right side
    15,936.53x = 280,904,743.16
  5. Step 5: Solve for x
    x = 280,904,743.16/15,936.53
  6. Step 6: Final answer
    x = 17,626.47

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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.