Home / 21,982.92-30,331.44-12,551.28

Finding the Fourth Proportional to 21,982.92, 30,331.44 and 12,551.28

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Solution

The fourth proportional to 21,982.92, 30,331.44 and 12,551.28 is: 17,317.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,982.92 : 30,331.44 = 12,551.28 : x
  2. Step 2: Convert to fraction form
    21,982.92/30,331.44 = 12,551.28/x
  3. Step 3: Cross multiply
    21,982.92x = 30,331.44 × 12,551.28
  4. Step 4: Simplify right side
    21,982.92x = 380,698,396.24
  5. Step 5: Solve for x
    x = 380,698,396.24/21,982.92
  6. Step 6: Final answer
    x = 17,317.92

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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.