Home / 20,704.86-31,037.04-8,220.74

Finding the Fourth Proportional to 20,704.86, 31,037.04 and 8,220.74

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Solution

The fourth proportional to 20,704.86, 31,037.04 and 8,220.74 is: 12,323.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.86 : 31,037.04 = 8,220.74 : x
  2. Step 2: Convert to fraction form
    20,704.86/31,037.04 = 8,220.74/x
  3. Step 3: Cross multiply
    20,704.86x = 31,037.04 × 8,220.74
  4. Step 4: Simplify right side
    20,704.86x = 255,147,281.02
  5. Step 5: Solve for x
    x = 255,147,281.02/20,704.86
  6. Step 6: Final answer
    x = 12,323.06

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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.