Home / 20,983.74-28,961.70-12,037.30

Finding the Fourth Proportional to 20,983.74, 28,961.70 and 12,037.30

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Solution

The fourth proportional to 20,983.74, 28,961.70 and 12,037.30 is: 16,613.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.74 : 28,961.70 = 12,037.30 : x
  2. Step 2: Convert to fraction form
    20,983.74/28,961.70 = 12,037.30/x
  3. Step 3: Cross multiply
    20,983.74x = 28,961.70 × 12,037.30
  4. Step 4: Simplify right side
    20,983.74x = 348,620,671.41
  5. Step 5: Solve for x
    x = 348,620,671.41/20,983.74
  6. Step 6: Final answer
    x = 16,613.85

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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.