Home / 20,451.40-30,676.02-5,660.80

Finding the Fourth Proportional to 20,451.40, 30,676.02 and 5,660.80

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Solution

The fourth proportional to 20,451.40, 30,676.02 and 5,660.80 is: 8,490.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.40 : 30,676.02 = 5,660.80 : x
  2. Step 2: Convert to fraction form
    20,451.40/30,676.02 = 5,660.80/x
  3. Step 3: Cross multiply
    20,451.40x = 30,676.02 × 5,660.80
  4. Step 4: Simplify right side
    20,451.40x = 173,650,814.02
  5. Step 5: Solve for x
    x = 173,650,814.02/20,451.40
  6. Step 6: Final answer
    x = 8,490.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.