Home / 10,896.40-16,312.20-7,202.80

Finding the Fourth Proportional to 10,896.40, 16,312.20 and 7,202.80

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Solution

The fourth proportional to 10,896.40, 16,312.20 and 7,202.80 is: 10,782.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,896.40 : 16,312.20 = 7,202.80 : x
  2. Step 2: Convert to fraction form
    10,896.40/16,312.20 = 7,202.80/x
  3. Step 3: Cross multiply
    10,896.40x = 16,312.20 × 7,202.80
  4. Step 4: Simplify right side
    10,896.40x = 117,493,514.16
  5. Step 5: Solve for x
    x = 117,493,514.16/10,896.40
  6. Step 6: Final answer
    x = 10,782.78

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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.