Home / 10,728.60-16,085.40-6,343.80

Finding the Fourth Proportional to 10,728.60, 16,085.40 and 6,343.80

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Solution

The fourth proportional to 10,728.60, 16,085.40 and 6,343.80 is: 9,511.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,728.60 : 16,085.40 = 6,343.80 : x
  2. Step 2: Convert to fraction form
    10,728.60/16,085.40 = 6,343.80/x
  3. Step 3: Cross multiply
    10,728.60x = 16,085.40 × 6,343.80
  4. Step 4: Simplify right side
    10,728.60x = 102,042,560.52
  5. Step 5: Solve for x
    x = 102,042,560.52/10,728.60
  6. Step 6: Final answer
    x = 9,511.27

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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.