Home / 12,665.60-18,999.48-3,306.86

Finding the Fourth Proportional to 12,665.60, 18,999.48 and 3,306.86

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Solution

The fourth proportional to 12,665.60, 18,999.48 and 3,306.86 is: 4,960.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.60 : 18,999.48 = 3,306.86 : x
  2. Step 2: Convert to fraction form
    12,665.60/18,999.48 = 3,306.86/x
  3. Step 3: Cross multiply
    12,665.60x = 18,999.48 × 3,306.86
  4. Step 4: Simplify right side
    12,665.60x = 62,828,620.43
  5. Step 5: Solve for x
    x = 62,828,620.43/12,665.60
  6. Step 6: Final answer
    x = 4,960.57

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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.