Home / 12,835.60-19,245.12-8,439.76

Finding the Fourth Proportional to 12,835.60, 19,245.12 and 8,439.76

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Solution

The fourth proportional to 12,835.60, 19,245.12 and 8,439.76 is: 12,654.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,835.60 : 19,245.12 = 8,439.76 : x
  2. Step 2: Convert to fraction form
    12,835.60/19,245.12 = 8,439.76/x
  3. Step 3: Cross multiply
    12,835.60x = 19,245.12 × 8,439.76
  4. Step 4: Simplify right side
    12,835.60x = 162,424,193.97
  5. Step 5: Solve for x
    x = 162,424,193.97/12,835.60
  6. Step 6: Final answer
    x = 12,654.20

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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.