Home / 31,835.36-43,913.26-18,905.86

Finding the Fourth Proportional to 31,835.36, 43,913.26 and 18,905.86

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Solution

The fourth proportional to 31,835.36, 43,913.26 and 18,905.86 is: 26,078.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,835.36 : 43,913.26 = 18,905.86 : x
  2. Step 2: Convert to fraction form
    31,835.36/43,913.26 = 18,905.86/x
  3. Step 3: Cross multiply
    31,835.36x = 43,913.26 × 18,905.86
  4. Step 4: Simplify right side
    31,835.36x = 830,217,770.57
  5. Step 5: Solve for x
    x = 830,217,770.57/31,835.36
  6. Step 6: Final answer
    x = 26,078.48

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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.