Home / 13,308.76-19,845.74-12,654.73

Finding the Fourth Proportional to 13,308.76, 19,845.74 and 12,654.73

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Solution

The fourth proportional to 13,308.76, 19,845.74 and 12,654.73 is: 18,870.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308.76 : 19,845.74 = 12,654.73 : x
  2. Step 2: Convert to fraction form
    13,308.76/19,845.74 = 12,654.73/x
  3. Step 3: Cross multiply
    13,308.76x = 19,845.74 × 12,654.73
  4. Step 4: Simplify right side
    13,308.76x = 251,142,481.35
  5. Step 5: Solve for x
    x = 251,142,481.35/13,308.76
  6. Step 6: Final answer
    x = 18,870.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.