Home / 19,405.62-29,115.99-7,720.02

Finding the Fourth Proportional to 19,405.62, 29,115.99 and 7,720.02

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Solution

The fourth proportional to 19,405.62, 29,115.99 and 7,720.02 is: 11,583.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,405.62 : 29,115.99 = 7,720.02 : x
  2. Step 2: Convert to fraction form
    19,405.62/29,115.99 = 7,720.02/x
  3. Step 3: Cross multiply
    19,405.62x = 29,115.99 × 7,720.02
  4. Step 4: Simplify right side
    19,405.62x = 224,776,025.12
  5. Step 5: Solve for x
    x = 224,776,025.12/19,405.62
  6. Step 6: Final answer
    x = 11,583.04

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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.