Home / 20,704.60-31,056.90-6,851.80

Finding the Fourth Proportional to 20,704.60, 31,056.90 and 6,851.80

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Solution

The fourth proportional to 20,704.60, 31,056.90 and 6,851.80 is: 10,277.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.60 : 31,056.90 = 6,851.80 : x
  2. Step 2: Convert to fraction form
    20,704.60/31,056.90 = 6,851.80/x
  3. Step 3: Cross multiply
    20,704.60x = 31,056.90 × 6,851.80
  4. Step 4: Simplify right side
    20,704.60x = 212,795,667.42
  5. Step 5: Solve for x
    x = 212,795,667.42/20,704.60
  6. Step 6: Final answer
    x = 10,277.70

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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.