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Finding the Fourth Proportional to 14,507.74, 20,022.30 and 8,540.89

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Solution

The fourth proportional to 14,507.74, 20,022.30 and 8,540.89 is: 11,787.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,507.74 : 20,022.30 = 8,540.89 : x
  2. Step 2: Convert to fraction form
    14,507.74/20,022.30 = 8,540.89/x
  3. Step 3: Cross multiply
    14,507.74x = 20,022.30 × 8,540.89
  4. Step 4: Simplify right side
    14,507.74x = 171,008,261.85
  5. Step 5: Solve for x
    x = 171,008,261.85/14,507.74
  6. Step 6: Final answer
    x = 11,787.38

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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.