Home / 12,455.70-18,685.56-4,665.12

Finding the Fourth Proportional to 12,455.70, 18,685.56 and 4,665.12

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Solution

The fourth proportional to 12,455.70, 18,685.56 and 4,665.12 is: 6,998.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.70 : 18,685.56 = 4,665.12 : x
  2. Step 2: Convert to fraction form
    12,455.70/18,685.56 = 4,665.12/x
  3. Step 3: Cross multiply
    12,455.70x = 18,685.56 × 4,665.12
  4. Step 4: Simplify right side
    12,455.70x = 87,170,379.67
  5. Step 5: Solve for x
    x = 87,170,379.67/12,455.70
  6. Step 6: Final answer
    x = 6,998.43

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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.