Home / 19,608.69-29,405.24-7,121.90

Finding the Fourth Proportional to 19,608.69, 29,405.24 and 7,121.90

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Solution

The fourth proportional to 19,608.69, 29,405.24 and 7,121.90 is: 10,680.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,608.69 : 29,405.24 = 7,121.90 : x
  2. Step 2: Convert to fraction form
    19,608.69/29,405.24 = 7,121.90/x
  3. Step 3: Cross multiply
    19,608.69x = 29,405.24 × 7,121.90
  4. Step 4: Simplify right side
    19,608.69x = 209,421,178.76
  5. Step 5: Solve for x
    x = 209,421,178.76/19,608.69
  6. Step 6: Final answer
    x = 10,680.02

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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.