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Finding the Fourth Proportional to 19,620.00, 29,448.49 and 7,152.07

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Solution

The fourth proportional to 19,620.00, 29,448.49 and 7,152.07 is: 10,734.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620.00 : 29,448.49 = 7,152.07 : x
  2. Step 2: Convert to fraction form
    19,620.00/29,448.49 = 7,152.07/x
  3. Step 3: Cross multiply
    19,620.00x = 29,448.49 × 7,152.07
  4. Step 4: Simplify right side
    19,620.00x = 210,617,661.87
  5. Step 5: Solve for x
    x = 210,617,661.87/19,620.00
  6. Step 6: Final answer
    x = 10,734.85

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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.