Home / 11,140.20-16,710.30-4,213.80

Finding the Fourth Proportional to 11,140.20, 16,710.30 and 4,213.80

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Solution

The fourth proportional to 11,140.20, 16,710.30 and 4,213.80 is: 6,320.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,140.20 : 16,710.30 = 4,213.80 : x
  2. Step 2: Convert to fraction form
    11,140.20/16,710.30 = 4,213.80/x
  3. Step 3: Cross multiply
    11,140.20x = 16,710.30 × 4,213.80
  4. Step 4: Simplify right side
    11,140.20x = 70,413,862.14
  5. Step 5: Solve for x
    x = 70,413,862.14/11,140.20
  6. Step 6: Final answer
    x = 6,320.70

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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.