Home / 12,835.74-19,245.31-8,439.87

Finding the Fourth Proportional to 12,835.74, 19,245.31 and 8,439.87

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Solution

The fourth proportional to 12,835.74, 19,245.31 and 8,439.87 is: 12,654.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,835.74 : 19,245.31 = 8,439.87 : x
  2. Step 2: Convert to fraction form
    12,835.74/19,245.31 = 8,439.87/x
  3. Step 3: Cross multiply
    12,835.74x = 19,245.31 × 8,439.87
  4. Step 4: Simplify right side
    12,835.74x = 162,427,893.41
  5. Step 5: Solve for x
    x = 162,427,893.41/12,835.74
  6. Step 6: Final answer
    x = 12,654.35

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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.