Home / 20,801.28-31,157.92-14,546.48

Finding the Fourth Proportional to 20,801.28, 31,157.92 and 14,546.48

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Solution

The fourth proportional to 20,801.28, 31,157.92 and 14,546.48 is: 21,788.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.28 : 31,157.92 = 14,546.48 : x
  2. Step 2: Convert to fraction form
    20,801.28/31,157.92 = 14,546.48/x
  3. Step 3: Cross multiply
    20,801.28x = 31,157.92 × 14,546.48
  4. Step 4: Simplify right side
    20,801.28x = 453,238,060.12
  5. Step 5: Solve for x
    x = 453,238,060.12/20,801.28
  6. Step 6: Final answer
    x = 21,788.95

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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.