Home / 14,107.55-21,159.16-3,720.11

Finding the Fourth Proportional to 14,107.55, 21,159.16 and 3,720.11

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Solution

The fourth proportional to 14,107.55, 21,159.16 and 3,720.11 is: 5,579.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,107.55 : 21,159.16 = 3,720.11 : x
  2. Step 2: Convert to fraction form
    14,107.55/21,159.16 = 3,720.11/x
  3. Step 3: Cross multiply
    14,107.55x = 21,159.16 × 3,720.11
  4. Step 4: Simplify right side
    14,107.55x = 78,714,287.61
  5. Step 5: Solve for x
    x = 78,714,287.61/14,107.55
  6. Step 6: Final answer
    x = 5,579.59

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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.