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Finding the Fourth Proportional to 30,551.82, 45,801.60 and 13,905.91

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Solution

The fourth proportional to 30,551.82, 45,801.60 and 13,905.91 is: 20,846.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,551.82 : 45,801.60 = 13,905.91 : x
  2. Step 2: Convert to fraction form
    30,551.82/45,801.60 = 13,905.91/x
  3. Step 3: Cross multiply
    30,551.82x = 45,801.60 × 13,905.91
  4. Step 4: Simplify right side
    30,551.82x = 636,912,927.46
  5. Step 5: Solve for x
    x = 636,912,927.46/30,551.82
  6. Step 6: Final answer
    x = 20,846.97

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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.