Home / 20,845.42-31,271.68-7,697.86

Finding the Fourth Proportional to 20,845.42, 31,271.68 and 7,697.86

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Solution

The fourth proportional to 20,845.42, 31,271.68 and 7,697.86 is: 11,548.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.42 : 31,271.68 = 7,697.86 : x
  2. Step 2: Convert to fraction form
    20,845.42/31,271.68 = 7,697.86/x
  3. Step 3: Cross multiply
    20,845.42x = 31,271.68 × 7,697.86
  4. Step 4: Simplify right side
    20,845.42x = 240,725,014.60
  5. Step 5: Solve for x
    x = 240,725,014.60/20,845.42
  6. Step 6: Final answer
    x = 11,548.10

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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.