Home / 31,299.60-43,205.22-20,703.72

Finding the Fourth Proportional to 31,299.60, 43,205.22 and 20,703.72

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Solution

The fourth proportional to 31,299.60, 43,205.22 and 20,703.72 is: 28,578.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,299.60 : 43,205.22 = 20,703.72 : x
  2. Step 2: Convert to fraction form
    31,299.60/43,205.22 = 20,703.72/x
  3. Step 3: Cross multiply
    31,299.60x = 43,205.22 × 20,703.72
  4. Step 4: Simplify right side
    31,299.60x = 894,508,777.42
  5. Step 5: Solve for x
    x = 894,508,777.42/31,299.60
  6. Step 6: Final answer
    x = 28,578.92

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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.