Home / 31,840.68-43,940.65-18,228.67

Finding the Fourth Proportional to 31,840.68, 43,940.65 and 18,228.67

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Solution

The fourth proportional to 31,840.68, 43,940.65 and 18,228.67 is: 25,155.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,840.68 : 43,940.65 = 18,228.67 : x
  2. Step 2: Convert to fraction form
    31,840.68/43,940.65 = 18,228.67/x
  3. Step 3: Cross multiply
    31,840.68x = 43,940.65 × 18,228.67
  4. Step 4: Simplify right side
    31,840.68x = 800,979,662.04
  5. Step 5: Solve for x
    x = 800,979,662.04/31,840.68
  6. Step 6: Final answer
    x = 25,155.86

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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.