Home / 20,954.16-31,431.24-13,168.44

Finding the Fourth Proportional to 20,954.16, 31,431.24 and 13,168.44

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Solution

The fourth proportional to 20,954.16, 31,431.24 and 13,168.44 is: 19,752.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.16 : 31,431.24 = 13,168.44 : x
  2. Step 2: Convert to fraction form
    20,954.16/31,431.24 = 13,168.44/x
  3. Step 3: Cross multiply
    20,954.16x = 31,431.24 × 13,168.44
  4. Step 4: Simplify right side
    20,954.16x = 413,900,398.07
  5. Step 5: Solve for x
    x = 413,900,398.07/20,954.16
  6. Step 6: Final answer
    x = 19,752.66

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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.