Home / 31,816.33-43,903.22-18,391.86

Finding the Fourth Proportional to 31,816.33, 43,903.22 and 18,391.86

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Solution

The fourth proportional to 31,816.33, 43,903.22 and 18,391.86 is: 25,378.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,816.33 : 43,903.22 = 18,391.86 : x
  2. Step 2: Convert to fraction form
    31,816.33/43,903.22 = 18,391.86/x
  3. Step 3: Cross multiply
    31,816.33x = 43,903.22 × 18,391.86
  4. Step 4: Simplify right side
    31,816.33x = 807,461,783.83
  5. Step 5: Solve for x
    x = 807,461,783.83/31,816.33
  6. Step 6: Final answer
    x = 25,378.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.