Home / 10,820.20-16,230.30-7,126.60

Finding the Fourth Proportional to 10,820.20, 16,230.30 and 7,126.60

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Solution

The fourth proportional to 10,820.20, 16,230.30 and 7,126.60 is: 10,689.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,820.20 : 16,230.30 = 7,126.60 : x
  2. Step 2: Convert to fraction form
    10,820.20/16,230.30 = 7,126.60/x
  3. Step 3: Cross multiply
    10,820.20x = 16,230.30 × 7,126.60
  4. Step 4: Simplify right side
    10,820.20x = 115,666,855.98
  5. Step 5: Solve for x
    x = 115,666,855.98/10,820.20
  6. Step 6: Final answer
    x = 10,689.90

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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.