Home / 20,820.60-31,235.02-6,029.64

Finding the Fourth Proportional to 20,820.60, 31,235.02 and 6,029.64

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Solution

The fourth proportional to 20,820.60, 31,235.02 and 6,029.64 is: 9,045.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,820.60 : 31,235.02 = 6,029.64 : x
  2. Step 2: Convert to fraction form
    20,820.60/31,235.02 = 6,029.64/x
  3. Step 3: Cross multiply
    20,820.60x = 31,235.02 × 6,029.64
  4. Step 4: Simplify right side
    20,820.60x = 188,335,910.92
  5. Step 5: Solve for x
    x = 188,335,910.92/20,820.60
  6. Step 6: Final answer
    x = 9,045.65

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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.