Home / 20,997.90-31,476.78-14,772.24

Finding the Fourth Proportional to 20,997.90, 31,476.78 and 14,772.24

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Solution

The fourth proportional to 20,997.90, 31,476.78 and 14,772.24 is: 22,144.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.90 : 31,476.78 = 14,772.24 : x
  2. Step 2: Convert to fraction form
    20,997.90/31,476.78 = 14,772.24/x
  3. Step 3: Cross multiply
    20,997.90x = 31,476.78 × 14,772.24
  4. Step 4: Simplify right side
    20,997.90x = 464,982,548.59
  5. Step 5: Solve for x
    x = 464,982,548.59/20,997.90
  6. Step 6: Final answer
    x = 22,144.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.