Home / 11,330.70-16,962.45-8,421.90

Finding the Fourth Proportional to 11,330.70, 16,962.45 and 8,421.90

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Solution

The fourth proportional to 11,330.70, 16,962.45 and 8,421.90 is: 12,607.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,330.70 : 16,962.45 = 8,421.90 : x
  2. Step 2: Convert to fraction form
    11,330.70/16,962.45 = 8,421.90/x
  3. Step 3: Cross multiply
    11,330.70x = 16,962.45 × 8,421.90
  4. Step 4: Simplify right side
    11,330.70x = 142,856,057.66
  5. Step 5: Solve for x
    x = 142,856,057.66/11,330.70
  6. Step 6: Final answer
    x = 12,607.88

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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.