Home / 11,505.32-17,219.10-7,125.80

Finding the Fourth Proportional to 11,505.32, 17,219.10 and 7,125.80

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Solution

The fourth proportional to 11,505.32, 17,219.10 and 7,125.80 is: 10,664.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,505.32 : 17,219.10 = 7,125.80 : x
  2. Step 2: Convert to fraction form
    11,505.32/17,219.10 = 7,125.80/x
  3. Step 3: Cross multiply
    11,505.32x = 17,219.10 × 7,125.80
  4. Step 4: Simplify right side
    11,505.32x = 122,699,862.78
  5. Step 5: Solve for x
    x = 122,699,862.78/11,505.32
  6. Step 6: Final answer
    x = 10,664.62

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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.