Home / 20,863.23-31,285.48-12,433.71

Finding the Fourth Proportional to 20,863.23, 31,285.48 and 12,433.71

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Solution

The fourth proportional to 20,863.23, 31,285.48 and 12,433.71 is: 18,644.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863.23 : 31,285.48 = 12,433.71 : x
  2. Step 2: Convert to fraction form
    20,863.23/31,285.48 = 12,433.71/x
  3. Step 3: Cross multiply
    20,863.23x = 31,285.48 × 12,433.71
  4. Step 4: Simplify right side
    20,863.23x = 388,994,585.53
  5. Step 5: Solve for x
    x = 388,994,585.53/20,863.23
  6. Step 6: Final answer
    x = 18,644.98

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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.