Home / 13,120.65-19,675.84-5,720.04

Finding the Fourth Proportional to 13,120.65, 19,675.84 and 5,720.04

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Solution

The fourth proportional to 13,120.65, 19,675.84 and 5,720.04 is: 8,577.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.65 : 19,675.84 = 5,720.04 : x
  2. Step 2: Convert to fraction form
    13,120.65/19,675.84 = 5,720.04/x
  3. Step 3: Cross multiply
    13,120.65x = 19,675.84 × 5,720.04
  4. Step 4: Simplify right side
    13,120.65x = 112,546,591.83
  5. Step 5: Solve for x
    x = 112,546,591.83/13,120.65
  6. Step 6: Final answer
    x = 8,577.82

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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.