Home / 11,720.16-17,581.02-3,929.04

Finding the Fourth Proportional to 11,720.16, 17,581.02 and 3,929.04

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Solution

The fourth proportional to 11,720.16, 17,581.02 and 3,929.04 is: 5,893.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.16 : 17,581.02 = 3,929.04 : x
  2. Step 2: Convert to fraction form
    11,720.16/17,581.02 = 3,929.04/x
  3. Step 3: Cross multiply
    11,720.16x = 17,581.02 × 3,929.04
  4. Step 4: Simplify right side
    11,720.16x = 69,076,530.82
  5. Step 5: Solve for x
    x = 69,076,530.82/11,720.16
  6. Step 6: Final answer
    x = 5,893.82

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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.