Home / 21,724.34-29,982.80-13,767.30

Finding the Fourth Proportional to 21,724.34, 29,982.80 and 13,767.30

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Solution

The fourth proportional to 21,724.34, 29,982.80 and 13,767.30 is: 19,000.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,724.34 : 29,982.80 = 13,767.30 : x
  2. Step 2: Convert to fraction form
    21,724.34/29,982.80 = 13,767.30/x
  3. Step 3: Cross multiply
    21,724.34x = 29,982.80 × 13,767.30
  4. Step 4: Simplify right side
    21,724.34x = 412,782,202.44
  5. Step 5: Solve for x
    x = 412,782,202.44/21,724.34
  6. Step 6: Final answer
    x = 19,000.91

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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.