Home / 20,883.93-31,327.16-8,403.90

Finding the Fourth Proportional to 20,883.93, 31,327.16 and 8,403.90

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Solution

The fourth proportional to 20,883.93, 31,327.16 and 8,403.90 is: 12,606.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.93 : 31,327.16 = 8,403.90 : x
  2. Step 2: Convert to fraction form
    20,883.93/31,327.16 = 8,403.90/x
  3. Step 3: Cross multiply
    20,883.93x = 31,327.16 × 8,403.90
  4. Step 4: Simplify right side
    20,883.93x = 263,270,336.64
  5. Step 5: Solve for x
    x = 263,270,336.64/20,883.93
  6. Step 6: Final answer
    x = 12,606.36

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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.