Home / 28,820.92-39,772.20-16,245.76

Finding the Fourth Proportional to 28,820.92, 39,772.20 and 16,245.76

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Solution

The fourth proportional to 28,820.92, 39,772.20 and 16,245.76 is: 22,418.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.92 : 39,772.20 = 16,245.76 : x
  2. Step 2: Convert to fraction form
    28,820.92/39,772.20 = 16,245.76/x
  3. Step 3: Cross multiply
    28,820.92x = 39,772.20 × 16,245.76
  4. Step 4: Simplify right side
    28,820.92x = 646,129,615.87
  5. Step 5: Solve for x
    x = 646,129,615.87/28,820.92
  6. Step 6: Final answer
    x = 22,418.77

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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.