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Finding the Fourth Proportional to 19,812.88, 29,698.37 and 7,324.88

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Solution

The fourth proportional to 19,812.88, 29,698.37 and 7,324.88 is: 10,979.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,812.88 : 29,698.37 = 7,324.88 : x
  2. Step 2: Convert to fraction form
    19,812.88/29,698.37 = 7,324.88/x
  3. Step 3: Cross multiply
    19,812.88x = 29,698.37 × 7,324.88
  4. Step 4: Simplify right side
    19,812.88x = 217,536,959.82
  5. Step 5: Solve for x
    x = 217,536,959.82/19,812.88
  6. Step 6: Final answer
    x = 10,979.58

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1.5x scale

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.