Home / 10,311.35-14,229.90-6,330.20

Finding the Fourth Proportional to 10,311.35, 14,229.90 and 6,330.20

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Solution

The fourth proportional to 10,311.35, 14,229.90 and 6,330.20 is: 8,735.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,311.35 : 14,229.90 = 6,330.20 : x
  2. Step 2: Convert to fraction form
    10,311.35/14,229.90 = 6,330.20/x
  3. Step 3: Cross multiply
    10,311.35x = 14,229.90 × 6,330.20
  4. Step 4: Simplify right side
    10,311.35x = 90,078,041.83
  5. Step 5: Solve for x
    x = 90,078,041.83/10,311.35
  6. Step 6: Final answer
    x = 8,735.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.