Home / 31,628.08-43,646.68-20,450

Finding the Fourth Proportional to 31,628.08, 43,646.68 and 20,450

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Solution

The fourth proportional to 31,628.08, 43,646.68 and 20,450 is: 28,220.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,628.08 : 43,646.68 = 20,450 : x
  2. Step 2: Convert to fraction form
    31,628.08/43,646.68 = 20,450/x
  3. Step 3: Cross multiply
    31,628.08x = 43,646.68 × 20,450
  4. Step 4: Simplify right side
    31,628.08x = 892,574,606
  5. Step 5: Solve for x
    x = 892,574,606/31,628.08
  6. Step 6: Final answer
    x = 28,220.95

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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.