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Finding the Fourth Proportional to 12,898.58, 19,347.90 and 3,538.73

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Solution

The fourth proportional to 12,898.58, 19,347.90 and 3,538.73 is: 5,308.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,898.58 : 19,347.90 = 3,538.73 : x
  2. Step 2: Convert to fraction form
    12,898.58/19,347.90 = 3,538.73/x
  3. Step 3: Cross multiply
    12,898.58x = 19,347.90 × 3,538.73
  4. Step 4: Simplify right side
    12,898.58x = 68,467,042.54
  5. Step 5: Solve for x
    x = 68,467,042.54/12,898.58
  6. Step 6: Final answer
    x = 5,308.11

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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.