Home / 21,463.18-29,620.83-13,512.22

Finding the Fourth Proportional to 21,463.18, 29,620.83 and 13,512.22

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Solution

The fourth proportional to 21,463.18, 29,620.83 and 13,512.22 is: 18,647.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,463.18 : 29,620.83 = 13,512.22 : x
  2. Step 2: Convert to fraction form
    21,463.18/29,620.83 = 13,512.22/x
  3. Step 3: Cross multiply
    21,463.18x = 29,620.83 × 13,512.22
  4. Step 4: Simplify right side
    21,463.18x = 400,243,171.54
  5. Step 5: Solve for x
    x = 400,243,171.54/21,463.18
  6. Step 6: Final answer
    x = 18,647.90

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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.